...it's an eternal quest :)
But why mess about with refilling, is it really worth the effort?
I'd go for compatible cartridges and I'd recommend InkMasters - be careful, as some makes can clog up the printhead. I've tried several others and been disappointed (can't remember their names, and probably shouldn't mention them here anyway!). But InkMasters' cartridges have been performing well now for several months in my Epson. And they have a daily Special Offer (well, it says updated daily, but they are still offering 3 for the price of 2 on Epson cartridges, which is what I ordered)
They also do Refill kits if you really must: