I have not heard the SA-250 but I used to owned a SA-100 Mk III. It did not sound nearly as good as a Levinson 334 on my B&W 802's. The Levinson was better in all respects - especially bass. However, it is possible that the SA-250 may sound better than the SA-100, you should listen to the options for yourself.
Plinius SA-250 or Mark Levinson/Krell/Mc
I'm about to place my dollar on a new Plinius SA-250 MKIV and now having a second thought. I'm planning to upgrade my speaker to B&W 802. Is Plinius in the same league as Mark Levinson/Krell or McIntosh? Will I be getting the same sonic quality/sound stage as the big league equipment? Should I save my money and go for a used ML/Krell or Mac instead? Please help.