If you are enjoying an IEM, keep it!
I still regret selling some IEMs. After a couple of months (years is better) without using it, I might trade/sell it but otherwise NEVER.
There are enough IEMs that sound great with the Clip+ that are high-end. A portable amp also does a lot if the Clip itsel does not suffice.
For me the Clip + Corda MOVE + RE-262 works great, on-the-go.
So does the Clip + Ortofon EQ-5.
For relaxed listening I have Clip + Corda MOVE + DDM.