Seriously you can't go wrong either way, It's like asking what car would you rather have a Ferrari or a Porsche. We all have are preferences, I was in your position about six months ago, & I ultimately went w/ the SQ Raider. I liked the Ranger Ltd. more,(They have a very loyal following) but the 2 things that were black mark on it were, I stopped by the LDS that carried it, & the Owner was playing a video game & wouldn't give me the time of day. On my second trip to LDS all he didn't have any Rangers to look at, & no Brochures. The other mark was, while I really like the ripcord system. I am going through Dive Master Class, & when you have to do the weight removal & replace, It is pretty hard to rethread the ripcord under water, let alone demonstrate it.
So I ended up going w/ the SQ Raider from my LDS, I have been very happy with it so far. The new SQ Black Diamond & old SQ Raider are almost identical as far as specs. Same lift, dumps, etc. however the New Black Diamond is much more user friendly, they have redesigned the pockets & attachment points. In the end I would ultimately say the only reason I didn't go w/ the Ranger was the customer service from the LDS.