The Ion is a blowforward type design, the Wrath is your pretty typical shove-a-pneumatic-ram-into-a-spyder-clone-body. They're like little brothers of the Shocker and, say, the Timmy and friends. There's plenty of fanboys for each design (spool valve/ram-poppit), you'll have to decide for yourself which one you like better, but put it this way, they'll both shoot faster than your fingers will move or your loader will feed, so who really gives a damn? They're both decent entry level type markers, but I too would suggest saving another hundred dollars and getting a second hand Angel or somesuch (older angels are really well built markers, but because WDP release a new version every couple weeks, the resale is horrible. Bad for the people who bought 'em new. Good for the people buying 'em used).