So, you're looking into a transportable setup. That depends on what you consider transportable. Some desktop DACs and amps are considered transportable, coz they're small and can fit into a sling bag. If that is the case then it's wide open, although to me, I'd rather have that kind of setup as a
permanent setup at that location than bringing it to and from from that location and home.
My advice is to look into these two setups I've mentioned:
» Click to show Spoiler - click again to hide... «
The first one if you're running off a DAP, the second if you also happen to
carry a laptop with you with all your music in it. As for the amps, it depends on what you want to run it with. I was initially thinking of an amp that can run and drive my Beyer T1 successfully until I came to the conclusion that only a dedicated home amp can properly run the T1. Relegated the T1 to home rig. I then moved on to my previous Denon D2000, which isn't hard to drive at all, even the built-in amp in the HP-P1 can drive it to satisfactory level. But I wasn't satisfied, I needed more. Got myself an ALO Continental, and this beast of an amp drives even the Beyer T1 with gusto and authority. Got myself an LCD-2, relegated the D2000 to [WTS]. Been running the LCD2/Continental/HP-P1 ever since.
Only 3 portable amps I know that can drive the T1/LCD2 satisfactorily: ALO Continental, Triad Audio L3, Ray Samuels Audio SR-71B running balanced. Out of the three, I discarded RSA SR-71B coz I'm not ready to go the balanced route. Triad Audio L3 is humongous for a portable amp, so that's out of the question. ALO Continental is the only one left. Was lucky to find one in Osaka when I was there. The ALO Continental is of limited run, already discontinued. They're moving to the solid state version, the ALO National, but even after reviews, the National isn't as powerful as the Continental.
Centrance DACPort LX vs Fostex HP-P1. Apples and oranges here. The HP-P1 only takes iDEvices as source. DACPort LX takes any USB sources. Which is why I had them in two different rigs. I'm not bi-amping my audio because the HP-P1 has a line-out port that is free from the amplification circuitry. Just don't plug your mini-to-mini interconnect to your phone out lah.

I already have a dedicated home setup. This happened by accident and out of necessity. Accident coz I wasn't satisfied of what I can drive at using my planned portable setup at the time, and necessity coz I needed something to run the Beyer T1 properly at the time.
My home setup: MacMini running lossless up to 24bit/192hz - Benchmark DAC1USB model - Burson Audio HA-160 amp - Beyer T1/Audez'e LCD2.
Previously the Centrance DACPort LX was in charge of the DAC duties before the Benchmark DAC took over. The DACPort LX does an admirable job for its size! The DACPort LX is now part of my transportable setup: Macbook Air running lossless up to 24bit/192hz - Centrance DACPort LX - ALO Continental - LCD-2.
» Click to show Spoiler - click again to hide... «
I'm also running the MacBook Air as my transportable movie theatre setup with Plex running as the front-end and I'll be carrying the 6TB WD Thunderbolt Duo around for source.
6TB Thunderbolt Duo - MacBook Air via Thunderbolt port - Plex front-end (www.plexapp.com) - HDMI out to any modern HDTVs in hotels. I can either designate audio out via the TV speakers or if I feel up for more fidelity, Centrance DACPort-LX - ALO Continental - LCD-2. But I digress, this is more for movie watching, not listening to music.

Nice setup. I've bit the bullet and bought a Wadia 121 last night. I agree with your views to have a more permanent solution rather than to bring things to and fro. Let's hope the Wadia impresses.
Oh, I wasn't clear, by home setup, I mean, with the amount of $$$ you're spending on your headphone setup, have you considered going with speakers?
I'm running a HTPC, but it's huge and definitely not something I can bring to hotels haha. Not that I'd want to. I don't think I could stand watching a movie through only TV speakers these days.
CLAS sounds a little drier compared to hp-p1, the p1 slightly more 'analog' sounding. Hp-p1 can do line out to Continental so there's no double amping.
Home stereo setup? You mean for headphones or speakers?
Stringfellow: there is a v2 of the continental amp out.
Home stereo setup. Sorry wasn't clear.
Thanks for sharing guys.