Angel, shocker - Owned both of these as well, and while I don't in general like electros, both outperformed the bushmaster handily.
Eclipse cocker w/ sp freak barrel and 68ci 4500psi raptor
I did the trigger spring swap out suggested on Tank's Bushmaster / Defiant website. Made a WORLD of difference. I also tossed an eclipse blade trigger on mine. Don't notice much of a difference, honestly. Replacing the barrel with a freak back is definitely a wise move, if you already have a freak front and inserts. If not, I recommend one.
Pricewise it's a good buy, competitive with most other mid-range markers, priced just a touch above cockers, and in the same range as the impulses / defiants out there.
Rate of fire - Like any electro, the rate of fire is not a problem for this gun, once you replace the normal trigger return spring (which is just WAY too soft). I popped in a cocker return spring with 2 coils cut off and the trigger is incredible now, competitive with any angel.
Quite frankly, it performs similarly to the angel. Rate of fire sortof makes up for the lack of consistancy / accuracy...For consistant accuracy, even with a good barrel, this gun doesn't hold a candle to cockers or similar.
If what you want is a gun that will let you throw a ton of paint, this works as well as any other electro out there. Nothing terribly 'outstanding' about it, but it works and very little seems to go wrong with it. A TON of aftermarket upgrades are available for it, but I still feel the only MUST HAVE mod is the new trigger spring.