what i really want is a reliable backup in cases i can't use my real msx
because i still makeing music and i want to make sure that not all my work will be destroyed
alexworp3: it's really what you prefer. From what I've gathered, the best emulators to go for are BlueMSX and openMSX. Depending on what operating system you're on, you can use one, the other or both. E.g. for *nix, OSX and Windows there's openMSX. From my experience, it's a bit of a hassle to get it operating right, as there are no ROMs provided with the package [I don't know about BlueMSX though!] so you'll have to look them up and place them in the right directories.
For Windows, there is BlueMSX, favored by many users around the globe - from what I hear this is more the point-and-click emulator. Again, it's what you prefer that's best.
From my own experience: I've never used BlueMSX, but then again, I'm on linux. I occasionally do stuff on my virtual hard disk, I use the IDE extension and a hard disk image in openMSX a lot. Since this post may sound like a openMSX advocacy, I invite other users to say the good stuff about BlueMSX
Personally I find blueMSX a bit of a cpu-hog on my jerky old system atm, occasionally resulting in completely ruined menus and other corrupted crap, not limited to blueMSX. There used to be a time when it was *far* more lightweight. On the same jerk system OpenMSX and NLMSX run like a charm. OpenMSX is far more low level, but most ppl won't need all that (the console). The biggest nagpoint I have with OpenMSX (tho it's not that much of a bother) is that it's obviously made by Linux ppl with a Linux mindset. It's hard to pinpoint where/how/why/details tho, it's just that the complete package o' things, including discussions with the developers) screams Linux all over the place. :-)