I have had a pair of ER-4Ps for nearly 15 years now...mostly gathering dust. While very accurate, I found them to be sterile and lifeless.
On a whim, I snagged a pair of 2XRs. They were meant to be my deep insertion/stay in place beater pair for exercising. But they are fantastic, and have exceeded my expectations in almost every way. I just can't get over their resolution - let alone for their price. And their timbre is spot on for me - with no EQ necessary.
I was so impressed, that I had to snag a pair of ER-4XRs. I couldn't pass up the Adorama deal at $139. Delivery was supposed to be yesterday, but after a full day of refreshing the UPS delivery status like a drunk monkey, now they are supposed to be delivered tomorrow
Now my hope is that they are closer to the 2XRs, vs the 4Ps...