Are the procomp 6AL's any good?

Thanks for the replies fellas.
I'd like to hear stories of these actually failing if anyone has them?
A mate of mine bought an MSD 6A directly off thier website. They sent it down here for him, and after only a few short weeks it stopped working. He couldn't afford the $50 (USD) that he'd have to pay for MSD to send it back/send a replacement, on top of the $25(NZD) to return it to them. So it basically got chucked in a box and forgotten about. I'm on a similarly tight budget myself.