I was in the exact same boat as you. I had my 2 and a 9. The only reason I purchased the 7 was cause I didn't have it yet. It sees 5 times the action my 2 does and 10 times the action my 9 does. I absolutely love my BK7, still don't have a 16 yet, still want one. I at first thought it was just a shortened 9, untill I used it, It is a great blade.
Yes you need a 7

Yes you need a 7

