Well I believe in outfitting my hunting rifles and MLs with as much optics as i can reasonably afford b/c hunting is my passion and even if it sees limited duty I want to know I can depend on my optics. I understand the need to justify so if you only have a set amount I would do either of the following;
A) buy a fixed power scope - as cheaper price will get you more in the new market and less to go wrong. You could also look for a good quality used fixed to fit into your budget as they don't bring the $$'s in todays market.
B) Detachable rings/bases and switch out scopes from one of your other scopes (if of decent optical quality). Yes it requires a bit of sighting in and playing but IMO would be a better option than a cheap scope that may or may not perform/hold zero.

Of the cheaper variables I have heard some good on the Bushnell Banner from ML shooters but personally have never owned or evaluated one so this is strictly hersay. I personally have used a number of Elites on my ML's with no problems, so would consider a scope in this caliber/range if your considering a good value/decent optical return in a variable scope.