it’s Klonopin or K-Pins and they are considered to be very similar to Xanax. Many people almost consider them interchangeable.
Personal euphoria from benzo types is widely personal and subjective. For example I enjoy diazepam over all other benzos and find Valium to be the most euphoric. Others call it weak, it comes down to brain chemistry and personal preference really
No way. Xanax is short-acting and quick-onset whereas Klonipin is the opposite on both counts (Valium for instance is quick-onset and long-acting; all the benzos vary on these dimensions as well as sedation vs anxiolysis vs muscle relaxation etc.) Xanax is generally considered more fun than Klonipin although both have their fans. Both definitely can be recreational drugs though.