if you have a local shop you can probably stop in & get a free demo on both tools- then you could decide which would be more useful for you. many shops will show you how to use the different specialty rulers & tools. i use my flying geese rulers alot---but i make alot of flying geese units. i seem to go through phases where i use them (i have the small & large) everyday for months- then don't use them at all for months. the angler i never use- it lives in a drawer---been there for years- but i have found tools i don't use sometime down the road i get them out & do use them then wonder how i got along with out it for so long- or suddenly find it very useful for what i am doing....again-those phases...