Shrooms, mainly because of their availibility (Liberty Caps grow abundantly in fields in UK, and despite their legal status, are still sold on markets on London, at least I've heard). That being said, there are many psychdelics I've yet to try that I might like. Still wanna try some of the DOx's and 2C-x's. They sound quite exciting. Acid is always nice every now and then, but it feels really strange to me, can't quite put my finger on it. The effects of shrooms just feel right to me, but with Acid it feels like there is a foreign control over me that I find a bit uncomfortable at times. Plus that and it's not the most easily availible psychedelic around either. Haven't tried DMT but it sounds way too intense for me to handle at the moment, at least at normal doses, but if I find some I may try it in very small doses and gradually work my way up to see what I make of it. MDMA and MDA are very nice, but in my opinion, not in the same league as any of the "traditional" psychdelics. While MDMA is exceedingly fun, it's psychedelic component just doesn't seem to show itself for me. So I guess I'm gonna have to say shrooms are my favorite.