RE: Sightron SII vs. Pentax WTU vs. Mueller TAC II
I have never much liked Pentax scopes nor seen Muellers, but I assume they are o.k. Every Sightron I've seen had great glass. I'd go with Sightron myself. Others to consider would be Leupold VX II or III, Weaver Grand Slam, Burris Fullfield II and Bushnell Elite 4200. Good luck in your selection.