I love, love, LOVE Triangulations software! I print it out on those scribble tablets from the Dollar Tree (40 sheets/$1). The sheets are a little too wide for my printer, so I trim them off.
Triangulations is GREAT because EVERY HST come out perfect every time, no trimming up, no squaring up needed. When making Celtic Solstice, the HST were to be 1 1/2" finished and with Triangulations, I could make 24 at a time!
To me, it is a great investment. The software also contains flying geese. I only have 3.0 version, so this new one will have to wait...