Hey guys, so i have a decision to make. I want to buy another new gun (just cause haha) but this time i want it to be a bigger caliber. Im torn between .300 wsm, .300 win mag and 7mm rem mag. I already have a .270, .243, 12 ga and 17 hmr. But i want a gun that i know that the moose/elk/bear etc in front of me is going down quickly, and I just want another gun

so which caliber, and what make and model do you guys recommend. I want a good, quality rifle. Not a piece of junk. Price range of under 700 bucks