One of the lightest I ever had was a Loggy Bayou followed closely by a Northstar and Timbertall Legend.

The easiest, safest and most comfortable was a Summit Viper. It's rated for up to 250#, but why push to the limit. For a bigger guy I would naturally recommend the Summit Goliath. A little heavier, but very stable and just as comfortable. I believe it's rated to 300#.