I have been buying V4INK toners for almost 2 years and I find them to be of good quality and prices. Of course there are cheaper options, but I've never had toner explosions in our V4INK printer. Their ratings remain good during this time.
Inkjet MFP Canon PIXMA G3415, color, A4, black
17 Review
Cool Toner 055H Compatible Toner Cartridge Replacement for Canon: High-Quality Ink for Your Printer (Black Cyan Magenta Yellow, with Chip, 4-Pack)
12 Review
TEINO Remanufactured Ink Cartridge Replacement for Canon 245XL 246XL PG-245XL CL-246XL PG-243 - Compatible with Canon PIXMA MG2520 MG2920 MG2922 MG2420 MG2522 TS3120 MG3022 MX490 MX492 (1 Black, 1 Tri-Color)
12 Review
Cartridge NV Print MLT-D111L for Samsung, black
13 Review