I don't agree that both bikes have uncomfortable OEM seats. The Beemer does for sure, like sitting on a vinyl covered 2x6 but the tiger isn't bad. I've got 3,500 miles on it and and not considering a replacement. I replaced the GS seat with a Sargent the first week, but it is still not as comfortable as the stock Tiger.
My complaints about the Tiger after getting used to the BMW.
Engine heat management on knees/legs- I had to fabricate some shields for the Summer.
Increase the fuel mileage 45 vs 62 mpg
Toggle switch for the computer moved from the pod to the handlebar.
Add ambient temperature display
Complaints about the BMW after getting used to the Tiger.
Use the Triumph engine - smooth, powerful, responsive and no buzz
The centerstand is way too hard to use.