B4 is fine mate!
Most of the bits are the same, and the quality of the plastics on the b4 are supposedly better than the 4.1.
I would go for some sort of 8.5 brushless combo. Should give you sufficient power/duration combo. Speed passion/novak/lrp/nosram and orca all seem popular.
Hobbywing is a budget speed passion rebadged, but you are most likely to find them on ebay as well.
I would buy a second hand speedo from on here as it will be in good conditon, but cheaper!
__________________
:: AE B5MCE - SP 7.5 v3.0 Brushless Motor - Reedy Shorty Lipo - Savox Servo - Spektrum Rx ::
:: Paint By Turnip Paint ::
|