Quick answer

Buy the MegaTank GX7170 if you print in high volumes, need fast duplex scanning and secure networking for a business. Choose the MegaTank G3770 if you want a lower-cost wireless 3-in-1 refillable tank printer for home or a small office. Both use refillable ink tanks, so the main decision is volume and features, not ink type.

What actually separates the GX7170 and G3770

The two printers share Canon's refillable MegaTank system, but they are built for different workloads. The GX7170 is positioned for business with high-intensity pigment inks, dual paper cassettes, automatic 2-sided printing and fast single-pass duplex scanning. The G3770 is a wireless 3-in-1 with a 1.35-inch backlight LCD, available in Black, Red and White, and is rated for print speeds up to 11/6 ipm mono/colour. The GX7170's pigment inks and duplex scanning matter most when you scan multi-page contracts or print colour documents that need to resist smudging. The G3770's smaller footprint and colour options suit a home desk or a small office where scanning is occasional.

Running costs and volume: where each tank printer earns its keep

Canon does not publish a page yield for either MegaTank model in the supplied catalog, so treat any running-cost comparison as a decision you make from your own monthly volume rather than a fixed cost-per-page figure. What the catalog does confirm is that both are refillable ink tank printers, which removes the cartridge-replacement cycle you would face on a cartridge model. The practical split is workload: the G3770 is a sensible fit for a household printing a few dozen pages a week, while the GX7170's dual cassettes and duplex scanning are there to keep a busy office moving without constant paper reloads or manual two-sided copying.

If your budget is tighter or your space is smaller

If the GX7170 is more printer than you need, the PIXMA E3370 is a compact wireless all-in-one with an LCD, available in Black and Red, with ISO print speeds of 7.7 ipm black and 4.4 ipm colour and a recommended print volume of 50 to 200 pages. It uses cartridges rather than refillable tanks, so it is not a MegaTank alternative for high volume, but it is a lower-cost entry point for light home printing. At the other end, if your work is photographic rather than document-based, the imagePROGRAF PRO-510 is a 12-colour A2 photo printer aimed at exhibition prints and galleries, not office output.

Decision rules: pick your MegaTank in under a minute

  • You scan multi-page documents weekly: Choose the GX7170. Its single-pass duplex scanning and dual cassettes are built for repeat document workflows. If you rarely scan, this feature is money you do not need to spend.
  • You print mostly from phones and laptops at home: Choose the G3770. Wi-Fi, AirPrint, Mopria and Direct Wireless cover everyday wireless printing, and the 1.35-inch LCD makes setup and status checks easier without a computer. Check the colour you want, since it comes in Black, Red and White.
  • Your monthly volume is light: Step down to the PIXMA E3370 if you print within its 50 to 200 page recommended range and prefer a smaller, lower-cost machine. Cartridge running costs differ from tank refills, so compare against your real monthly page count.

Key product facts

  • MegaTank GX7170: MegaTank for Business with high-intensity pigment inks, dual giant paper cassettes, automatic 2-sided printing and fast single-pass duplex scanning, plus secure network communications. Pigment inks and duplex scanning suit contract-heavy offices that need durable colour documents and fast two-sided copying.
  • MegaTank G3770: Wireless refillable ink tank 3-in-1 with a 1.35-inch backlight LCD, available in Black, Red and White, with print speeds up to 11/6 ipm mono/colour and Wi-Fi, AirPrint, Mopria and Direct Wireless. The colour choices and wireless printing make it easy to place on a home desk without running cables.
  • PIXMA E3370: Compact wireless all-in-one with LCD, available in Black and Red, ISO print speeds of 7.7 ipm black and 4.4 ipm colour, and a recommended print volume of 50 to 200 pages. A lower-cost cartridge option for light home printing where a refillable tank would be overkill.
  • imagePROGRAF PRO-510: A2 professional photo printer with a 12-colour ink system for fine art prints, photography and graphic design. Relevant only if your priority is large-format photographic output rather than everyday document printing.

Who each printer is for

Best for

  • Small businesses and offices printing high volumes of documents
  • Teams that scan multi-page contracts and need duplex scanning
  • Users who want pigment inks for durable colour documents
  • Anyone who wants a refillable tank printer with secure networking

Not for

  • Households that print only a few pages a week and want the lowest upfront cost
  • Photographers who need A2 fine art prints and should look at the imagePROGRAF PRO-510 instead
  • Buyers who want a compact, colourful printer for a small desk and should consider the G3770 or PIXMA E3370