Thing is though, with Traditional patterns a little bit bigger/smaller actually make a big difference in how they carry.
Coon fingering my Forum Knife 14 a 77 frame and a 66 Rotten Banana Jack on my desk at the moment. The main difference is of course the frame pattern. 66 being Serpentine two spring (there is the Slim version which is single-spring 2 blades though) and the 77s I have are both single spring and Swell End which clearly feels different in the hand. Other handling differences are the 66 is devoid of half-stop and is a very smooth opener, the 77 having a strong 'barking' half-stop.
In terms of weight, the 77 based Forum Knife in Stag shows 65g The 66 RB Jack is a bulkier 74g despite being smaller and the Slim 66 is just 55g
Thanks, Will