Horses for courses mate,try them both if possible before making YOUR mind up.But if you want the Ego 07,wait a bit as they will drop in price(not much but every penny helps,right?)when the Ego 08 comes out
GO to a tournament and ask people if you can try different kinds of marker. Everyone on here will tell you to buy what they use or are sponsored with, and just because they are right for them it doesnt mean it will be right for you.
There are tons of threads asking exactly the same so try the search button. Failing that, make time to go to a local tournament like I said
Thinking about it you should just go buy an EGO7!!!!
Nige