Mine is the Bonneville T120; the 120 stands for 1200 cc's. I wouldn't even look at the T100's. I really like it, but it's not for everyone. The biggest downside is the riding position; I like my feet further forward. The brake and shifter are tiny. Still, when I get on it I'm 21 years old again, every single time. The quality is amazing. It feels like a featherweight when riding it and moving it around the garage. It's not sport bike fast, but it sure beats about every big Harley. I'm 270 #'s and it stretches my arms.
I find myself wanting to get off it every hour or so, but that's not necessarily a bad thing.
The chain is a PITA compared to a belt. You have to take the mufflers off to clean, lube, and adjust the chain. Fortunately I only have to adjust it about every 1,000 miles no matter what Triumph says.
The only option I added to it was a genuine Triumph brand jiffy stand. They used to come standard but no more.
I still travel every year on my Street Glide, but that bike gets heavier all the time. When I want to get away for the day I only want to go on the Triumph. It's just so effortless to ride. Just getting it off the kickstand puts a smile on my face.