recommended 6922 tubes for a moderate price?

Hello fellow A'goners!
I'm new to tube rolling and have a modest budget, but want to try upgrading the driver tubes (6922's or their equivalents) for my Onix SP-3 integrated amp. I'm driving Vandersteen 2ce's and generally prefer blues, jazz, and classic rock. Hoping to improve that "live" quality and "3D" soundstaging. Would like to keep it under $100 a pair, but don't know how to navigate the world of tubes quite yet. Some of the prior info. may be irrelevant but any suggestions from wiser audiophile brethren is much appreciated! Thanks!