Personally,I didn't like it too much except the early stages,it had a considerably body load to it but this could be attributed to a not so good set and setting.Altough 10mg (p.o.) felt like a too low dose also.A second full trial with 15mg though upped things quite a bit.Interestingly,it wasn't on the manic giggling side,particularly remarkable was the cone of silence it provided,like with MDMA but quite longer.But I was at home in perfect silence (living on the landside) during night.
Mostly,its a mood lifter,with noticeable goosepimples,head prickles and such,I guess it has a good dopaminergic side in higher doses...
Edit: but how can you judge when you had tolerance?