I had a BS300 for a few years and it was a smashing machine, I doubt the 250 is any less of a machine Obviously you have to change the blade as the ones that come with it are made from cheese strings, but apart from that it was great.
Most low/medium woodwork equipment is severely compromised in my experience, but bandsaws tend to be the exception. A few years ago I upgraded my Record bandsaw to a Hammer N4400, the bigger table is nice, but it's hardly transformed my life. I mean you can't compare the furniture I was making with the Record, with the furniture I'm making now, and say, "Wow! That bigger bandsaw has really made a difference"!