The Klipsch X1 are great at the special price, definitely better than the Senns. If you don't want the sort you insert then look on the bay for Yuin PK3, they are the best cheap earphones. Sennhesier do the MX760 and 580 which are decent but the PK3 is just a little more and notably better.
Klipsch image x1, although they look a bit wierd when wearing them.
For comparison i have the sennheisser CX300 II aswell and the klipsch are far superior in sound quality imo.
I just bouught one of those klip x1s based on you lots advice lol and a bit of research hope there good theyl arrive tomo n I'll provide an opinion hehe