I wouldn't necessarily recommend a PC based sampler solution for recording, as they are resource hogs and are often difficult to make non-glitchy, particularly if you play a lot of notes at once
First off it would be good to tell everyone here what you are currently using. For example if it's a Yamaha P140 that you don't like then I'd not recomend any other Yamaha
Yes he's right. You'd be nuts to use a PC. Macs have none of those problems. I can run multiple
copies of software instruments in real time with zero latency issues. Stability and crashes are just an absolute non-issue. Well, that assumes you are not trying to run on 10 year old equipment.
If computers really were such a hassle then you'd be in a world of hurt in any modern studio. What is it that records all 24 of those tracks but a computer. There are not many analog studios left. Almost every one is using ProTools or maybe Logic.
The way a software instrument is used in a studio is in post production. You'd assign one to a MIDI track and give it a listen. Then likey tweek the parameters and EQ and so on or try another sample set until you get the sound "right".
However you can record from a DP directly. I'd image that the primary use for a Roland V-Piano would be in the studio. It's ability to adjust the piano sound would be exactly what a music producer would need. Also the v-piano has digital "S/PDIF" output so you avoid an analog link, perfect for recording.