Reply to Should I be convinced to choose 900s over 850s? why?

Was at my local store today trying out 1 cdj 850 with 1 cdj 900 and 900 nexus mixer. Not in market for a mixer but i will be selling my 1000s mk3 for some 900s or 850s. They feel nearly exactly the same with the few features of tilted screen, link, quantise and slip. is it really necessary to spend the extra $400 each on 900s? Will be used for house parties and to practice and prepare for a club i play. I can pick up a pair of new 850s for $1418 or a pair of 900s new for $2340. $922 extra.. is it worth those features.