iv had mine a while now, had an 1150gs before which was great, bought a 1200gs after, (earlyish one ) and was blighted with problems, sold it in the end, had enough, but i hear the newer ones are much better,that put me off bmw for a while......
i borrowed a 800gs and just did not like it, vibey and seemed a bit underpowered,not too impressed with handling. (i tried more than one bike and for many miles),
so i looked at triumphs, didnt want the 1000cc plus ones so got an 800xc off a mate, very impressed, build quality is good, although the odd nut/bolt is tarnished, and the spokes showed a very small amount of rust, easily removed (the bike was in a dampish garage for a year due to owner having a stroke)..
engine wise, perfect ,been around a few years so pretty proven, goes more than quick enough, and enough low power to potter about, no real vibes, handling, better than the 800gs, but maybe the 1200gs had it on handling , it was maybe more stable on fast corners, imo, the 800 engine is hard to beat , with no more problems (or even less) than most other makes..
all round i like the triumph, i would maybe consider a new big bm in the future, but unless i start doing touring in a big way (i mean 600mile plus days)again im sticking with my 800...
dealer wise, it seems very varied, some good, some crap.about the same as bmw,
downsides, puncture repairs harder, not quite as roomy as a big bmw, dealers are too dear, (but i do my own servicing)
upsides, great motor, well built, handles and tours good, easy access via tunecu /dealertool/tigertool to fault find and change mapping if tuned eg, (mines an early one, later ones have no map change capability)50mpg plus.
accesory wise, about as much choice as bmw...
i miss the feel of the big twin, but its not enough to make me go back,