Consider Reaper installed in any off-the-shelf laptop (or desktop), but probably spending somewhere around $1200 to $1500 will get you the best results (price/performance wise). Source-Destination Editing - Cockos Confederated Forums
Reaper is $60 if you decided to buy, and you can demo for free. Extremely light weight yet powerful, and has very good macros developed by serious users.
The link above shows souce-destination editing using macro developed for Reaper. It's not as elegantly implemented as samplitude/sequoia, but usable. If you don't like Reaper, then get Samplitude. $60 is probably worth paying anyway.
For the classical music editing/monitoring using laptop, I recommend RME Babyface as a companion, which has an excellent DA converter. You probably have a good headphone, so this combination (a PC laptop+Babyface+Reaper+headphone) allows you to do 4-point editing in a hotel room.