Early on, VTL did develop a reputation for unreliability. Though that reputation may have been deserved years ago, the quality of VTL equipment has improved and that ought not to be an issue anymore. (I can only speculate that the reliability issue may have changed when Luke Manley, the son, took over VTL from his father, David Manley. David Manley is known as an outstanding designer and Luke Manley seems very focused on satisfying his customers.)
I have a VTL 2.5 and VTL 225 DeLuxe Monoblocks and am very pleased with them. The 2.5, a newer product, has had no problems at all and I am the second owner. I'm considering upgrading to the 5.5 because I am so pleased with the 2.5. The 225, an older product, is sonically outstanding, a former Stereophile Class A amplifier.