Non padded, my straps are old planet wave straps that are just over an inch wide. They came with a pad on them, but I removed the pads immediately. They aren't leather though they are weaved nylon. Pads just feel weird to me on stage. Unfortunately they don't make the strap anymore, which is why iam glad I own 6 of them. With schallers on them it is enough to swap between guitar, since I don't play all of my guitars at once.
I use Dimarzio cliplocks for 11 years - no pad or foam on all my LP's and Teles and strat. I also have a mono strap which i rarely use cause i tend to sweat more with it and feel icky after a while. The Dimarzios have served me well. So I voted unpadded.
In addition I prefer the synthetics or natural fibers. Don't like brokeback mountain leather.
Always hated padded straps. Too damn bouncy. I currently use leather straps, as they stay on the shoulder quite well; not as likely to slip off. Specifically, I use Ernie Ball leather straps because they can ADJUST TO 60"; Levy's only goes to 54". I'm a bit portly, and need a longer strap.
Cotton weave stays put as well, and is more fluid when moving around. Nylon is great if you are spastic and move the guitar around a lot like an a$$hole. I use Souldier and Planet Waves straps at times for this very reason.
The Gibson Comfort Series straps (like the Fatboy in the poll) are expensive so there will be fewer owners around to vote for them and they will probably 'lose' the poll. However weigh the comments of those who own them carefully.
At least fifteen other types of straps have lived here over the years: wide, thin, leather, fabric, pleather, non-slip... done them all. Since discovering the Comfort Series straps several years ago, I've stopped looking at straps. Heaven is like a Comfort Series strap. Supremely comfortable, doesn't slip around, seems to take a pound or two off the weight of the guitar; it's an all-nighter.
(Henry, there's another plug for these, when do I get my check?!)
Not a fan of padding either. As weight goes up, I just go wider. Fortunately I generally don't buy heavy guitars so it's not an issue very often. Theres just too much good stuff out there to buy something potentially uncomfortable.