are all those lenses still in production and available new? if they are then sure i wouldnt mind having a sony, the prices for their dslrs are pretty decent.
A lot still are produced, but under the Sony name and not the Minolta name. Some are not, but are well enough made that they may by 25 years old, but preform as well as a brand new lens. Most of the lenses I keep in my bag all the time are first generation Minolta AF lenses that were made back in 1985. Great color rendition, sharp, and best of all... every single one is stabilized because Sony does it in body and not in the lenses. If it is Auto-focus, then it is stabilized. Some of the best lenses out right now are the Carl Zeiss lenses in the Sony line-up.