While Crystal Acoustics' THX-3D12 System represents "Best", for "Better" look no further than their TX-T or TX-D 5.1 Home Entertainment Surround Speaker System. The Front L/R Towers are not fully THX specified, so to keep their slim looks and handle the bass, Crystal designed a slightly higher crossover for this speaker, 120Hz. Coupled with a THX-Dipole or THX-Towers for the surround channels, and a THX Center, you'll have the world in your pocket while keeping a few more pennies in there than the "Best" THX-T3 System.
Whatever you choose, you'll be amazed at how little you have to spend these days for quality beyond reproach.