Had a MEC Base Camp pillow, didn't like it so I moved on to a Thermarest Compressible which was okay but as a side and belly sleeper I still found it a little small plus it got hot.  Found a Nemo Fillo Luxury Pillow on sale over the winter and I've used it on two trips so far.  So much better...it's larger but packs down to the same size if not smaller than the Thermarest and gives you much better control over the form, height, etc. of your pillow. Huge improvement!