Lock back vs. Frame lock

[SouthEast]

I like both. But mainly my collections are spydercos with lockbacks.

 

[stabman]

Judging by the number of each in my collection, I prefer both.

 

[rpn]

Between those 2 Sages I think the lock back is dead on gorgeous. On another point, I think the 4 has a wider/broader handle that might feel better.