The PX200 is quite different from the PX100. But I think for portability alone, PortaPro would beat the SR60s.

I would say the price range sounds reasonable (no pun intended). If it sounds good to you, that's all that really matters, really. But if you really want to know, then maybe post a few pics.

I would say that soundstage, and extension will be affected most. Dynamic cans will be able to provide much more bass than most IEMs ever could. Also, comfort will most likely improve, and everything will just sound a lot more natural in general. I think the OP said he's not really looking...

Play around with the different tips, that might help too.

I've read some bad things about GS-1000 pads on non-GS1000 cans though. It is believed that the pads were specifically designed for the sound signature of the GS1000 drivers (in terms of bass and soundstage, etc.) So YMMV.

One Can to rule them all...at least till the upgraditis bug bites...

The light on the Melos normally changes color a while after switching on. I'd take that as a good indicator.

Can I sign up too? Need an LOD for my iPod Touch. . Thanks a lot! Merry X'mas man!

Technically speaking, all MP3 players have amps built in. The reason why people here use amps is because the amps in some MP3 players are not as well implemented and this may result in things like roll-offs, or simply not enough impact, etc.

i'm very happy with my Patriot 16GB. The only time it ever failed was when I stuck it in a non SDHC reader, and that was fixed after a re-format.

well, I remember some sellers on A-gon used to sell them new for really cheap.

325i's will be around $225~$250 used. RS-2s will be quite a bit more, like lacrossebowe8 said, around $350+. For me, personally I decided that I'd eventually one day go for RS-1s anyways, so I went straight for them, but you'd probably feel differently

How much is this turn table worth nowadays? quite curious about vinyl.

of the few that you listed, I'd choose the UM2. SE310s will most likely have less bass than the UM2. And from what I've read, the UM2s are better than the SF5 in terms of balance and fit.

Hmm, for your genre I might suggest AKGs, I remember they're quite good for jazz. Just as an aside, I think it's interesting that you try to build your system around your amp, since most people start the other way around. Good Luck