I don't know if you have already made a decision yet, but I've thoroughly researched both proflex and eshopps wd. Most of what I learned are from the videos on youtube. You could watch and determine what is best for you.
I like the eshopps more than the proflex because I know I want a wet/dry system, the material for eshopps seem more tougher, and the whole system is almost complete (just need pump). Proflex lets you customize and do different things with it, but I need to buy more equipment to complete the system and the product seems a little flimsy.
I hope this helps.