Hope this is posted in the right place if not please move.

I would like to buy a desktop engine dyno program and just like to know what others might be using. I know Holeshot is using one from his posts what you using?
I am looking at the 2 below from Summit most likely the $75 one as I just want to do some checking and can’t see spending more $$$ for some thing I may use a dozen times.
Desktop Dyno Basic, Engine Dyno Simulator $39.95
Desktop Dyno, Engine Dyno Simulator $74.95

Also looking at the drag sim too any one play with it too.
Desktop Drag Basic, Vehicle Drag Strip Simulator $39.95

Ok if you where a cheap SOB like me what would you go for
Thanks Dave ----