I once own the vincent 226. A great integrated with tight bass, smooth mids and highs, great soundstage. Wish I never sold it! I have not heard the 500.
Vincent SV-500
This looks like a good integrated to get one’s feet wet and try out vacuum tube sound. On sale.
http://www.audioadvisor.com/mobile/prodinfo.asp?number=VISV500
http://www.audioadvisor.com/mobile/prodinfo.asp?number=VISV500