Master Mason said:
This is like the ford vs chevy debate.... There is no real answer, and comes down to personal preference.....
If you give us some idea of what your looking for in specifics... you might get some comments about those specifics.....
But the best bet would be to decide what features you want, your budget... then side by side compare them for feel etc...
In the Ford vs Chevy debates, I was always on the Chrysler side.

Same with Japanese cars - Honda vs Toyota? Gimme a Subaru! Anyone who's ready my other posts knows where I'm going here.
To the OP - are you sure that you can't get the part? I actually called Sony today about a Minolta repair (the wife's X20 has a wonky CCD), and got a human being right away, who was helpful and the camera is being repaired for free even though it's at least 3-4 years old, due to a CCD recall. They're even sending a prepaid envelope. If you have lenses, you might be best to stick with the Sony DSLR to keep using your current ones. It also has the image stabilization, which you might miss if you go with a C/N.
My impressions of the "big three" DSLRs (and no doubt these can be debated):
Canons may have a slight image quality edge, but it's slight. The lenses are expensive (some extremely so), image stabilization is only available in the lenses, and ergonomics are more frequently listed as a problem than others. Only relatively new lenses work. They also have the smallest LCDs - not a huge deal but there it is. They do usually have higher megapixel counts but actual detail will not be significantly different than the 6mp DSLRs from the others.
Nikons seem to be slightly cheaper and are good all-around, but again, image stabilization is only in the lens and while it can use older lenses, it cannot meter with them.
Pentaxes are cheaper yet and use the same Sony sensor as most of the Nikons. Some claim inferior high-ISO performance but plenty of people don't see a difference and are very happy with high ISOs. They (apart from the upcoming K10 and the DS models) have a shorter burst rate than the C/Ns but I don't find that to be much of an issue in the "real world", but it depends on how you like to shoot. The K100D and K10D have image stabilization in the body, and they all work very well with any Pentax lens ever made. Pentax also is the only to currently offer a full line of primes. Ergonomics are often rated highest on the Pentaxs, but the Nikons are virtually identical, just slightly larger/heavier.
If I were buying a highend-end (say, $800+) camera, I'd go for the Pentax K10D and really not consider anything else, but it's not out yet so that depends on the image quality, since they're using a new 10mp sensor and some other new tricks.
For the lower range, my first choice (picking one from each manufacturer) would be the Pentax K100D, then a Nikon D50, then a Canon. I know many people love their Canons, but I've heard more people who aren't particularly happy with them than I have for the other two. And the cost of the image-stabilization lenses is breathtaking!
But chances are, you'll be extremely happy no matter what you end up with. They're all superb and any faults are usually pretty nit-picking ones.