fanatec csw v1 vs fanatec csl elite wheel base

Hi guys! A friend is selling a used fanatec csw v1,5 for 200 euros without wheel. But i see that the CSL Elite Wheel Base it costs 320 euro (120 euro more) but new. What's your opinion? Is there a lot of differeces between them? Should i keep my g27? :) :) thanks!