I owned a 2.5 for a couple of years, and it is a real bargain. The optional phono stage is quite nice as well. Tubed with Mullard/Telefunken tubes, it really soared. The MultiCap upgrade from VTL was worthwhile, and inexpensive. My dealer let me borrow a Classe' preamp while the 2.5 was at VTL, and I really missed it.
Consistently excellent results with VTL ST-85, MB-125's and ST-150. I used it with a Plinius SA-100mkII for a few months as well...nice sounding combo, but I went back to an all-tube system.
In an all-tube system, I preferred Tele's. With the Plinius, the slightly warmer tone of the Mullard tubes worked best.