Hi mate. Welcome and sorry about your wallet.
First thing I'd say is that if I were to be in your shoes, I'd probably not expect too much in sound quality update when moving from the Klipsch S4. I know you'd think that you got the right to do so, and I wholly agree, but given the diminishing return law and the fact that the S4 is already very good bang for buck to begin with, I'm quite afraid you can't. However, the improvement in sound quality should be substantial and noticeable, so if you deem that is not worth what you've paid for, sell them and move on.
Next, have you checked the fit, the seal and the bass knobs? Make sure you have experimented all the stock tips to find ones that suit you the best. Also make sure that the bass knobs are turned to minimum and do not push the earpieces all the way down your canals. I found that even though the latter one tends to give me a better seal, it sacrifices soundstage in the process while making me look silly. Try to make some room between the canals and the earpieces.
Lastly, how about keeping them burned in for another 100 hours and seeing if there is any further improvement in SQ? The trick is to leave them burned in without hearing them, so that your brain does not get adjusted to the sound signature and any changes along the process.
Hopefully they'll remain with you afterwards