My Brother fax is no big deal it uses a reservoir system to filling the cartridges is a piece of cake. My HP 8150 is an ink HOUND my wife prints pictures so we use 2 cartridges a month and I'm venturing on that as we speak, the cartridge uses a sponge and when you peel the sticker off the fill holes are revealed. I'm squeezin the ink in as we speak and its very easy. The kits come with a stand for your cartridges.

I look at things on a time value stand point so 2 new inkjets cost $50 and it takes me 5 minutes to refill and about $5.00 of ink. So I think I'm doing OK and heck its recycling right?