Very lekker Jon, glad you are back on a dirt bike; interesting your comparisons with the XRR and the happy button - very difficult to go back. I have a little experience as I had a 520 that had been ridden hard in competition (not by me - I babied it) and it was absolutely reliable and not much different to my 2006 525 power wise (in fact I think the 525 runs hotter), the suspension was just slightly better on the 525 (although maybe not as stable in sand) but I've spent more on it (the KTM fork seals are not Honda).
You do get a 13 litre tank which is great and a behemoth 25 odd litre one that makes the bike very front heavy if it's full. If you are touring the sub frame is not that strong. Maybe check the rims and spokes, mine loosened, broke a few and cracked the rim. Also the chain slider that it doesn't eat the swing arm; KTM have a loose chain compared to Jap bikes. No cush hub so I've always run knobblies.The seat is from the devil and is only tolerable if you compare it to a bicycle. Try not let the front sprocket run loose (it usually leaks a bit of oil to let you know) - re-dish the washer as the orange aren't making RFS counter shafts any more.
Many happy km's.