2C-C's effects often drop rapidly for me, even when peaking at 75 mg I can be back almost to baseline in 30 minutes. But if you want the opposite extreme you have DOC, prepare for a 20+ hour trip if the blotters are strong.
How has 2C-C felt on your heart? The other 2C-X's are harsher on your heart and can be very harsh on your body, e.g. 2C-E gives a nasty bodyload and nausea for quite a few people. I wouldn't touch 2C-X's besides 2C-C anymore but many enjoy e.g. 2C-E intensely. The other 2C-X's are a step into considerably much deeper territory mentally than 2C-C too, maybe with the exception of 2C-B.
Anyway nice you've enjoyed 2C-C, it's enjoyable but that's all it is really though.
Why on earth have they put that image on a DOC blotter? At least they have the decency to write DOC on it.