What are your impressions of each? I think I have narrowed things down to either a 3.5x18x44 Z5 or a 3x18x50 Z6, and get the BT and probably a set of Outdoorsmans turrets. I may have a hard time finding someone with each in stock but am working to find what I can. Any impressions from comparing the two? Tracking, light, clarity and color, near dark performance? This will go on a 24" custom 30-06. Thanks.