Can't speak for reliability or service having never owned or ridden one. They do have a strong following of people who love them, just as people do with BMW. The bike has great standard features, the warning with that is once you have it, you can never go to something with less. I have ever bell and whistle on my BMW R1200GSA and could not imagine going to a bike without all the features I have. Once you get used to it you get hooked.
I love adventure bikes in general, they are great all around bikes that do a lot of things well... not perfect. From getting groceries to crossing the continent. Don't think you will be disappointed with any of the big ADV bikes. BMW has done an amazing job with the new WC boxers, Triumph XC1200 is a great looking bike, KTM, Yamaha, don't think you can really go wrong with any of them.