I had posted an earlier thread about trying to make up my mind about buying an 8" sturdy vise. Today my dilemma increased when I found a knock-off of old Record Vise No.24 with a quick release mechanism. The original was made in England, but this is by an Indian manufacturer (Apex). It has 6" wide jaws opening to 9" (same as the two 8" vises I had posted about), costs nearly the same as the other two, but weighs only 70 lb (against 96 lb for the 8" ones without quick release). I really like this vise 
My query: is the benefit of quick release more than the smaller size of this vise, and should I go for it?
Thank you in advance for your replies.

My query: is the benefit of quick release more than the smaller size of this vise, and should I go for it?

Thank you in advance for your replies.