I have 8611's on ailerons and elevator, DS330's on rudders. Did not bother with functional flaps, slows up well enough without them for me and I love the way it flies on the Kingtech (18 lb thrust) K80E turbine. Definetely one of the smoothest flying sport jets in my hanger. I used to recommend the Kangaroo as an ideal transitional (jet flight) intro model but the Velox would be another one of my recommendations also nowadays. Leave the flaps well enough alone till your 100% totally comfortable with this jets flight envelope would be my simple advice as the flaps are VERY effective and do slow the model quite dramatically. Getting behind the drag curve with a slow spooling turbine will get your attention with any jet, this one is no exception

Heres a nice demo video of the Velox performing for those interested...

[youtube]http://www.youtube.com/watch?v=38nNFHdS5vk[/youtube]