I recently sold my 2018 Tiger 1200 after putting nearly 40k miles on it. I think it is a fantastic bike, but... I have shortish legs, 31" inseam, and so the seat height was an issue, and yes, it is top heavy, although in fairness that disappears once moving. To help with this I used 20mm lowering links which helped a lot. One downside of lowering the bike though was I scraping my pegs more often. I was excited to see the new 900 and was considering it, but after seeing it in the flesh it didn't feel like a premium machine, and the T-plane crank with added vibes had no appeal.
Triumph were supposed to introduce the new 1200 last year but we all know how that worked out. So, I test rode a friends GS1250 one afternoon this past July and was sold. Lower CG, less weight, and the punch of the 1250 motor was impressive. I did a roll-on with a buddy on his Tiger 1200 and the GS easily pulled away. So, a 2021 GS sits in my garage and the Tiger has a new owner.
I'm disappointed Triumph didn't come out with two versions of the new bike, the Rally with the T-plane crank for the green lane off-road guys, and the GT with the Speed Triple crank and conventional firing order. It's the same motor/block, just swap some parts. I also like that my GS is basically the same weight as the new Tiger but I get to keep my single-sided swing arm.
This biggest disappointment for me with the GS is the suspension. The ESA is just not working for me, way too little damping when in Soft mode, so that just leaves me with one usable mode, Dynamic, which is fine for twisty bits, but a little to firm for just cruising.
Anyway, I'm still very interested to see how the new Triumph does in reviews but for the moment I'll be keeping the GS.