My favourite portables to date are the V-Jays. Value is critical for me, because I always look for sub £50 for my ultra-portables. Have used a lot of portables including expensive ones from Shure, and used in-ears for long enough to realise that I don't like them. I prefer open backs, so I can actually hear stuff when out and about & prefer the balance / comfort. The Jays headphones are a bit like the Koss Porta Pro with tighter bass and more sparkling highs. A fun fun fun design that makes AKG & Sennheiser portables sound boring.
Mana Acoustics Racks / Bright Star IsoNodes Decoupling >> Allo DigiOne Player >> Pedja Rogic's Audial Model S DAC + Pioneer PL-71 turntable / Vista Audio phono-1 mk II / Denon PCL-5 headshell / Reson Reca >> LFD DLS >> LFD PA2M (SE) >> Royd RR3s.