We've used a Montana LLC legally and uneventfully for over a decade now and we're full-time. However, as you've already pointed out, this can be a very contentious topic on this forum so I'm not willing to discuss anything here again on the forum.
However, I am willing to discuss anything privately with you or anybody else who can be civil but I won't respond to anybody --either on the forum or in private-- who accuses me of breaking the law, cheating the government, being dishonest, fraudulently filing my taxes, etc., etc. ...nor obviously to those calling me a whole host of nasty names in private. I've been participating on this forum since 2003 and just about every thread I've participated on pertaining to this topic, I've run into those who have accused me of everything under the sun. There's also a whole host of just plain wrong information being given out pertaining to LLCs by those that come across as knowing a lot.
Using an LLC has narrow parameters one must adhere to if doing things above board and legally. If one can operate within that framework, it's a viable alternative. I'm not saying that I'm an expert nor know all there is to know but am satisfied that what we've been doing for over the past decade is both ethically and morally sound.
With that said, we have found that insurance, especially, is more expensive and also more restrictive but is more than off set by savings in other areas. I also agree with twogypsies that Miller Insurance in the Portland area used to have some good agents who I thought understood the LLC situation. I used them for a few years but got what I believed to be a questionable interpretation in two areas pertaining to the "garaging" and another issue so switched to Destination several years ago.
...ah, I guess I've said enough, LOL. I'll go away now.