Well, by "looking into" I mean a close friend of mine is about to replace her Canon SLR with a 400D and wanted some help. I don't know much about quality of cheaper Canon lenses but I know you guys might
Thanks for your answers

The 28-135mm with a 50mm sounds great, and I have now looked at a 28,50,135 combination that seems within reasonable price range. As I can see the cheap 50mm is better than the Minolta I have and if the other primes are relatively as good then that is a sweet lineup. It could be nice to see how all of the above performed in real life like how the colors and bokeh is.
If I should leave the a-mount it should be because new Sony lenses are about twice the price of Canon and I don't think they are any better.