Hey FNG!
The problems that you are describing are not systemic to the model. Not everyone is having those issues, much less all of those issues.
The earlier models have had problems, much like any new model, and Triumph has been very forthcoming in getting them addressed. I, for one, haven't had the timing chain issue (known as 'paint can rattle'), the stalling issue, or the final drive problems that others have experienced. I have a 2006 standard.
I have had minor annoyances with the gearbox. I'm taking my bike into the shop to have the 'upgrade kit' installed under warranty, even though I've been out of warranty for 11 months now.
The upgrade kit is nearly 200 parts that will be replaced. If you purchase a 2007-09, these parts are already fitted and there's no need for the upgrade kit. If you buy an older model, my first question would be has the kit been installed.
I have over 10k miles on mine and other are well over 30k.
If I had the option of 'doing it over again', I'd make the same choice in a NY minute. I've never had so much fun on two wheels.