I'm in the same boat ( replacing a lot of scopes right now ) my concern has been quality, repeatability, & features, I've not been worried about weight...
but I just bought 2 of these Burris's lately, & so far, I really like them... & they are listed at 18 oz...
http://www.midwayusa.com/product/154...ProductFinding
this on is still on my "to buy" list ( again, listed at 18 oz, & I also like this reticle )
http://www.midwayusa.com/product/228...-reticle-matte
BTW... scopes I've bought lately... 6-18 Vortex Crossfire ( lower cost of their line, but I'm impressed enough with the scope, that I'd buy another albeit a better grade ) Weaver 4-16 Kaspa ( again lower grade, but seems decent so far ) (2) Nikon Prostaff 5's ( one with mildots, & one with BDC reticles... bought these on sale about 6-9 months ago, at $100.00 less than they are selling for now... like these a lot as well ) a Luepold VX 2 2.5 - 10X, & Luepold VX3 4-12 in silver, & the 2 Burris's listed above
of these purchases, my favorites are the Luepolds, the Nikons, & the Burris's ( I really like the Burris reticle on on the scopes linked )