The sony A300/A350 offers live view, other than that they are very similar to the A200, so it depends if you want live view. I’m sure you’d be more than happy with any DSLR but I’ve got an a200 and here’s why…
The main benefit of the Sony is the body anti-shake which means that you have anti-shake on all lenses including prime (fixed focal length) lenses.
You can get HSM lenses for the Sony, but I can’t say I’ve considered the focus speed of standard lenses an issue.
The a200 is hard to beat as an entry level camera (which is the conclusion of the magazine reviews). The upgrade path is strong too, so you can upgrade the body and use the same lenses on the higher spec sonys all the way up to the full frame a900.