Reply to S4 Versus Numark NS7 for scratching?

Hey all I've been DJing nearly 25 years, I'm basically a traditional old school Hip Hop scratch DJ (believe DJ Premiere style, not Q Bert!). I've been using Traktor for 4 years now and don't really want to change (I use the vinyl control system with 1210s).

But, now I'm selling my gear and just want to replace with a single unit plus a laptop. Now I like the fact the NS7 has motorized platters as it feels more vinyl like, but I seem more drawn to the S4...also, eventually when I have a bigger studio, I'll have decks again and want to plug them into something like the S4 (which is why I don't want the S2)

So, basically, are there any scratch DJs out there used to wax but wanting to change like me to 100% digital with an opinion on these 2 systems?

Many thanks!