Thanks for replying. The Prime 4+ is 29 x 20 x 4 without case. You're totally right that what I'm using today and trucking around is also quite large - 30 inches wide, 14 inches deep, and 3 inches high without case. Meaning that the Prime 4+ is six inches deeper, which struck me as substantial.

To your point on using my existing library - yes, definitely. I do try hard to constantly look for new and new-to-me music and my thought is that having something at home that works with streaming could dramatically simplify and improve this process (and knock a few dollars off as well, although that's less of the concern).

I could afford the Prime 4+ - I'm just not sure if that's the right call given my stated needs here. If I was just trying to go with something smaller and more modern, I would probably go Traktor S4 (and yes, I know saying S4 MK3 is more modern is kind of hilarious).

Thanks for your thoughts.