Recently I took 24mg (in 1mg blotters) in a single session over about 9 hours (taking them). I fully agree that 30mg would give you a very reasonable expectation of death. About an hour after finishing the last one I couldn't move, I couldn't see any of the objects or walls in the room and ended up having a couple of mild seizure-like episodes. I took my trip chilling in my living room, with a nice big playlist queued up. I guess a good 3 hours after the last tab I was able to crawl off to my bedroom to lie down properly. I must have been just lying on my bed for about 6 hours - I couldn't try and sleep, it was terrifying whenever I tried to close my eyes.
The next (well... the next next day) day I was perfectly fine when I woke up. This was a week ago now, and I haven't felt any ill effects from the experience... but I really wouldn't recommend taking anything that you consider would be a hefty dose. I have been with someone when they totally flipped on this stuff (6mg). I'm really glad no one died that night - it was one of those situations where it was becoming likely.