Best amp for Vandersteen 2sig

Hi, I am starting over with my system. I am considering going with Vandersteen 2sig. I have heard these at a dealer was very impressed with their sound and value. The goal is a very enjoyable stereo system without spending as much as new car would cost! I already have a Rega planet 2000, VTL 2.5 pre amp, Transparent interconnects and speaker cables, and Richard Gray 400 power conditioner. I am cosidering a VTL ST85 (about 80w per ch) because this really fits the budget. But is this amp enough tube power to drive these speakers? I like to listen to Jazz and Rock, not A/C D/C at 120db but more like Steely Dan at low to moderate levels.
Thank you for your suggestions.