I Have:
Samsung Galaxy S III i9300 (Root access+several sound enhancements)
SanDisk Sansa Clip+ 2GB (Rockboxed)
Sennheiser HD 25-1 II
Sennheiser HD 202
Shure SRH440
I Had:
Apple iPod Touch 4G 8GB (Jailbreak)
FiiO E7, E10
Audio-Technica ATH-M50s