I think there's more to it - you make shrooms sound bad on every metric, which I think is unfair. Shrooms are certainly more confusing, and have less of a positive push, but i feel like there are qualitative aspects beyond that that cast shrooms in a more positive light, but there aren't good ways to describe it. That said, i do prefer acid over shrooms.
Shrooms _do_ have one easy qualitative advantage - they're significantly shorter, and combined with the shorter duration and less stimulating nature, you can take them much later in the day without fucking up your sleep cycle.
As for OP's question about how to describe it - it's very hard to describe it to someone who hasn't tripped. It's not that your friends don't want to tell you, it's just extremely hard to describe tripping to someone who hasn't - and also it's very hard to rate two very good, but different, typical psychedelics against eachother. Plenty of people consider shrooms and LSD to be equally valuable but for different sets/settings.
I would strongly, strongly recommend taking LSD or shrooms on their own, and enjoying and experiencing them without another powerful drug like MDMA, before you consider a flip with them. Not just in the interest of making sure you have a good trip, but even as a matter of respect for the substance. LSD is a wonderful and magical chemical, and I find the idea of not taking it and it alone (well, with some weed too, of course) on one's first time to be irreverant almost. Your first psychedelic trip (MDA is psychedelic, but it's got other stuff going on, and i don't think it is a sufficient representative of typical psychedelics) shouldn't be "contaminated" with things that completely change the nature of the experience (just like i wouldn't advocate an experienced tripper having their first time with MDMA be as part of a candy flip)