MDAI is lovely. There was a lot of poorly synthed/cut stuff going round the UK so it got some bad press, but 250mg of decent stuff is heaven. Like MDMA but with zero stimulation, so one for taking at home (preferably with someone to get all loved up with :D )
MPA is a fairly standard straight stim, very little euphoria unless you plug it. I quite like it but it has mixed reviews.
6-APB is fun, nothing spectacular - some stimulation, some empathy/euphoria, a little trippy but not bucketloads of any of those. I like it but again, mixed reviews
5-IAI - yet to actually hear from anyone who has tried it...
So yeah, MDAI gets my vote
edit: hightimes - stims certainly can make people a bit selfish and self-obsessed, and can also make you quite irritible and easily angered - so yeah, I probably have been a dick on stims. In terms of lying, stealing etc - that is addict behaviour, I don't think it is exclusive to stims. If it isn't making you happy, maybe you should have a think about whether you want to try to stop.. I suggest making a post about it in TDS, you'll get a lot of people who understand and can offer good advice

Try not to beat yourself up over it - what is done is done. You can't change the past, but you can decide not to be that way anymore and make steps to change the future
