Hi again
Since I use this model for flying in winter (real cold winter), I prefer to fly in low-wind conditions only. But compared to my other models used for competition I do not feel that I lack any speed. What I notice is that the Epsilon gains quite a lot of speed going down, even with 16x8. This may be because I am now used to electrics and their very good braking.
Generally it's very important to have a really low idle to get proper downline braking.
Ola