I actually feel the same way. I had the itch for a new phone a few weeks back, have played with a Moto X etc.; don't get me wrong there's a lot of really nice, fast phones out there, but after the 4.4.2 update, debloating, and putting some ktoonsez kernel action on my phone, it really flies. I'm not certain a new device would really add that much value to what I already have.
No complaints whatsoever, still performs like a new device. Camera is still solid. Battery gets me through the day (I can usually eke out ~2h of screen-on time and have just under 50% battery left, and this is with the original stock battery than came with the phone).
All around a great device.
If my post helped you, hit the thanks button!
Phone: Samsung Galaxy SIII SPH-L710 flashed to Page Plus
ROM: Stock ND8 Debloated
Kernel: Stock Unsecured