I have recetly (last 2 years or so) gotten on a kick of collecting vintage Weaver scopes, and specifically but not exclusively look for the Post and Cross hair reticles... just cause I've learned to use them and just am most comfortable with them.
But, I have mostly been picking up the fixed power K2.5's, K3's, K4's and K6's for the exact reason stated above. When I'm not tempted to fuss with adjustments it takes one issue out of the problems that could arise.
I used to use only fixed 4's .. but now with 54 yr old's eyes the 6's seem more appropriate for me.
Additionally I have gotten a V7, V8, a KV (which switches form 2.5 or 3 to 5 power...not a variable, but an either / or).
These older scopes are not as bright or as sharp as the finest scopes out today, but in many cases they are better than a lot of the middle of the road stuff being sold, and much cheaper if you don't mind dealing with a little "road wear". Adds character I think.
Besides, any of the older American made steel tube Weavers are often worth being restored and repaired by
Weaver Scope Repair Service
1121 Larry Mahan Dr
Suite B
El Paso, TX 79925
(915) 593-1005