(Tongue in cheek follows...)
"Caution: Opinion follows; all potential consumers implicitly accept the condition that opinion consumption carries risks that may not be immediately apparent and as such are totally responsible for any outcome, direct or indirect, of consuming (or ignoring) said opinion..."

From the reviews across the WH website from many very experienced pilots, the 3mm powers the Sukhoi with plenty of authority and the reported 3D and IMAC capabilities do not suffer a bit.

For me, I chose the 3mm due to Tom's reputation with his products he sells and the fact that I could save a pretty good chunk of money and still have an engine that would do everything I needed it to.