All three engines you mention are fine products. It may help to know what kind of plane this is going in, as the DA and ZDZ are rear-carb'd engines, while the BME is a side carb'd engine. This will probably mean you will need to cut a hole in the firewall to accept the rear carbeurator.

That said, I will say I am biased towards the BME, since that is the only one of the three that I own. I can honestly say that my BME .50 has run like a top out-of-the box, and has plenty of power, unlimited vertical, on my H9 80" CAP 232.