I use the Minolta Maxxum 5D, which is the predecessor of the A100. KaiGwyer uses the A100.
The A100 is a nice camera, but Sony is prepping new bodies, including a replacement for the venerable Minolta 7D. If you have an existing collection of Minolta AF
lenses, the A100 is definitely a good buy. If you're starting out, it's not a bad camera. The main knock against it is high ISO noise at night when shooting at ISO 800 or higher. This is because the camera uses less in-camera noise reduction than similar cameras, which yields higher detail at any ISO.
I'm an old Minolta guy and most of us Minolta guys are still on the fence with Sony. If they don't deliver the advanced bodies we want, we're probably on the way out, which is sad. I love Minolta but I will not buy a Sony until the 5D dies. The target is around the end of the year.
The nice thing about the Sony is you can pick up good Minolta glass on the cheap, like the 70-210 f/4, 75-300 f/4.5-5.6 (Metal version), various primes, et cetera. Minolta's G series glass is world renowned in its quality, but you can only buy it used (unless you buy new Sony G glass which costs $$$). There's also healthy third party support from Tamron and Sigma.