Having an EPSON R200 myself here is my 2cents.
First of all I don't work for EPSON Second of all I would usually recommend using original inks Now that we got this out of the way I think you shuold be very careful with third party inks......A lot of them are crap! Having done many tests I have chosen the Jettec inks (the EPSON formulation inks). IMO, they are high quality inks and are the closest match to my original EPSON inks, in fact most people will never tell the difference....in fact in some cases they are better. With other generic ink kits you WILL notice the difference (example: greenish tint in yellows, etc.....) Q-ink is a good example of ink to avoid in that respect......despite their claim of being quality......
I have NEVER had problems with the JETTEC INK for my EPSON - It is dye based and has not clogged my heads once. The wrong ink formulation will cause frequent clogging. The only time I have gotten missing lines in the nozzle test was due to air trapped between the outlet and the head, easil resolved with a cleaning cycle or two, but after which I would go through the entire cartridge with perfect nozzles.
I buy the 5 colour jettec refill kit for EPSON.
2) NEVER attempt to refill your original EPSON cartridges - they are a pain in the arse. Since the filling area is below the cartridge you need to make sure to properly seal the hole with a plug..... Also, the cartridge for your EPSON is spongless and pressurised... Its complex design makes it impossible to refill it completly.....You will only be able to fill around 5ml.... (There ARE tricks to fill it completly, but it is very messy :D)
I have ever since thrown those out and purchased empty refillable carts which are EASIER to refill, and have the filling hole ON TOP of the cartridge along with a rubber plug to seal the hole...... MUCH easier to refill and they take a complete refill ! I have purchased those through sellink.ca (note: do not get the pre-filled carts as they use generic inks...... get the EMPTY cartridges). I use 1 for each colour, combined with the JETTEC 5 colour refill kit.