From everything I've read the prophecy smells like potential ballache. Lots of different mechanisms in there and many many parts. After owning countless halos over the years, if I were to replace my loader I'd rather go for something a lot more simple and robust.
if you want a hopper that performs really well with reballs and paintball alike go for a pinokio they are ugly put perform really really well and extremely easy to clean and simple to use. you can usually pick one up for around £60
The real reason people don't use them is because they don't cost a fortune, and because you can't get a shiny new one at the start of the season. Loved my revvy, never missed a beat. Same as my egg.