Ahsan's experience mirrors my own.
They are built pretty solidly (and a little on the heavy/bulky side as a result). The MP-153 is easy to dissasemble and clean, very reliable with hunting loads, and most of them are able to digest standard and heavy target loads reliably after break in. Aftermarket choke tubes are easily available, but I still don't find mine patterns as well as my beretta or ithaca.
A couple years ago when I bought mine they were selling in the $400-550 range, but prices seem to have gone up slightly. Overall, for a budget semi, I think they're as good or better than anything else in the price range. My intention was to use it as a beginners waterfowl/turkey gun and to use it as a loaner once I had the money for something better.