^ I tried SC2 twice last week at a concert.
Having taken SCs on at least a half dozen occassions before I did not feel that the SC2's were much to rave about. Sure I felt that really clear energized high for about 3 hrs -I was able to dance like a maniac and talk non-stop with my friends- I still didn't feel they were worth the extra cash.
The high was very similar to the regular SCs (I had two SC2s btw).
Oh actually I nearly forgot one really bad side effect I got from them.. about t:6.5hrs: I stayed up very late that night just simply laying down and talking , early duing the morning I felt pretty intense rushes of nausea that had me running to the bathroom twice to hurl!
I say rushes because they were true rushes. I felt fine one minute the next I was getting a little more upset in the stomach, heated up and then had to chuck - not all that much though, it reminded me of a power chuck that I do on pills when I rush too hard. My girlfriend told me that I looked incredibly flushed and I was sweating around the face heaps. The rushes passed after about 45mins. They were extremely unplesant.
Once again I could not sleep on these AT ALL! I needed sleeping meds in the end to knock me out. The next day I didn't feel scattered but when I sat down to concentrate hard on some reading I found it extremely difficult.
I took one the next night at another concert and felt nothing major really. Not as happy and not as energized, which can probably be expected from two nights in a row. Luckily I have learned my leasson and did not decide to have more to keep me going, one was enough and I ended up sleeping fine this time - about t:9!!
IMO stick with the SCs. These were fun but definitely not light-years ahead of the originals.