This debate has been around this forum pretty much since the RW series came out.
From what i remember, and it may have been posted already is that the Laquer and RW have the same electronics and pickups. The differences are in the woods. I remember hearing that RW series has specially chosen woods, that are dried and prepped much more thoroughly then the Laquer versions, which gives the RW series a much lighter weight, and better resonance. Plus they are done up in Nitro, which i personally love!
I bought a RW on TB like 4 years back, and its easily my favourite bass. It beats out the MIA Precisions i have played (I am sure some out there are better, but what i have picked up just weren't the same) The RW just feels better.. its lighter, and smoother, and much nicer to play due to the nitro.
If you are tight on cash and can get the Classic series I am sure you will love it, but theres just something on the RW that has me in love with them lol Maybe its real, maybe its a placebo, but its there in my mind that its worth the money.
However i should point out that on a record you won't be able to tell the difference, so any price increase is for aesthetic and tactile reasons alone...