I haven't had any personal experience with them, specifically, but I can tell you that noone can make that decision foryou. If you have a plane large enough for that size, then it should only be a matter of what you want to power it with, not what it costs. I will see three grand plus leave my wallet when it's time to purchase the engine for the 30%er! I will search for feedback and reviews for the one you spoke of, but it really all boils down to: What do you want to power the bird with? Verticle cylinder... twin, maybe four cylinder... opposed or verticle jugs... radial... ducted fan... the options are at your discretion. Worth is a relative term. Thingsare really only worth what someone is willing to pay.

Keep your head up on a swivel.