Greetings,
I too, a few days ago, had the same question and came to the conclusion that none of our illustrious team players seem to think that my or your question is of much importance.
You should include the EDIROL PCR 1 in your list for around $150 bucks U.S.
I need one of these gadgets to input acoustic drums for my purposes with Sonar Producer....an awesome piece of software from FXpansion called BFD. For me, the most important features required are that the keyboard is very velocity sensitive with good, solid feel. I also need a 2 octave board for basic horn section work.
I never got to demo an Alesis in my area, but I did get to try the EMU Xboard 25 and the EDIROL PCR 1. Either one for me would be great!!! I think the EMU will win because it's onboard sounds are great...did you ever hear a Proteus 2000 before???
I'm bringing it home from Sam Ash in Tampa tonight and will do my thing...if I don't like it, there's a 14 day return policy and then I'll grab the Edirol PCR 1.
No matter what, for the price of these things, it'll be a win/win situation.
I'll post a report in a few days. Hope this helps.