The Sendero's are beastly rifles, well north of 10lbs when scoped. Very precise, well made, but heavy and bulky. If you'll be taking long shots and not having to walk too far with it, go with the Sendero. The Winchester is a nice rifle too, I've owned 2 of the new(ish) Model 70's (New Haven Conn. production after they went back to CRF), 1 Super Grade in 30-06, and 1 Sporter in 7mm WSM. Both shoot quite well, and the Sporter I currently have is quite handy and has plenty of punch. I don't think you could go wrong with either rifle to be honest. Try to go somewhere that you can handle both of them. The other rifle I would suggest taking a look at is a Sako A7 Roughtech. I like the mid weight profile fluted barrel for easy carry, grippy stock, stainless construction and the 60 degree bolt throw is a nice touch too.