I'm interested because:
Easier to count coil wraps.
Easier to keep wire wraps under consistent tension.
Easier to have straight hot legs.
Easier to keep up w/ mandrels.
Easy to make DIY mandrels from drill bits, syringes, screw drivers, etc.

Also interested in the spinning jig which looks better; not yet offered here.

Have yet to purchase a jig because cave man style works pretty good. Am tempted by FT low prices though.