I use and like my Summit Goliath. It's the same as the Summit Viper, but with a little larger top. It uses the same base, but the top is a little wider which is nice if you are a bigger guy or for if you're wearing bulky winter clothes. It adds about 1lb over the Viper.

http://www.summitstands.com/summit-goliath-sd-climbing-treestand-mossy-oakr-camo