I have bought two 4200 on here in the last year.
The first is a 4200 6-24x40 side focus that sits on my Rem 700 LVSF in .204 Ruger.
Love it. I paid 400.00 for it shipped. Clear, SF is nice, Compact in size for a high powered scope with AO.
The other 4200 I bought on here is a 4-16x40 Side Focus. it sits on My Tikka Model 55 in .22-250. great optcs for the money. If you keep your computer on and your eyes open you can find great optics for a little more than 1/2 the price of store bought.
Another model i would consider is the Weaver grand Slam...
Hope this helps. Good luck with your shopping. Hey! the shopping part is half the fun..LOL!
Tikka