It's all a matter of personal taste, and strictly speaking there is no such thing as a woodsball or speedball marker
Different markers support different playing styles, therefore an a5 would not tend to be appropriate to play on a compact speedball field on a game with high rates of fire and for sprinting, ducking and diving etc
That's not to say an ego is out of place in the woods. It's light, manoeuvrable and can shoot a small amount of paint or a lot of paint
Back on subject though, if you like the a5 then the x7 phenom is an advancement
Otherwise there is an abundance of choice, see if you can get to one of the retailers warehouse shops and check some out for how they feel or ask other players at walkons or events to have a feel of theirs, some will let you have a quick game to try out as well