>>6687862>>6687888>>6687906The main reason to get HP-CS (Eclipse) over HP-CR (Revolution) is the ease of cleaning/maintenance. You can take Eclipse apart without any tools and clean it thoroughly (especially the nozzle which is not screwed on). This is more important than you may think because if cleaning is a chore you will use your airbrush less often. Less practice -> slow improvement -> less motivation to continue.
>0.35 vs 0.5If you are only going to have 1 airbrush go with 0.35 because you can do pretty much everything with it. 0.5 is awesome for quickly covering large areas but it's not so good for medium to small details. You can also convert your Eclipse to 0.5 later if you get a better airbrush.
>10ml vs 5ml cupYou may not need to spray a full cup of paint
but you would want to spray a full cup of thinner when you clean it.