Outfox,

I have used both types of tail motor mods. I like the GWS DD tail mod the best. I am 41 flights (almost 6 hours) into this mod and it is flying nice.

I bought the ducted fan edf-40h and extracted the motor out of it. I also used the prop and prop adapter, as listed in bladecprepair. I have used a stock 9t motor and a 3800 BL main motor and the tail performs great with each motor. It holds pretty darn sweet, even with the increase in headspeed with the bl motor. The tail runs a lot warmer in the BL set up. For about $20.00 in parts, this mod is put together. Use the CN-12RXC motor for this mod.

Compare the $20.00 full price of the DD mod to a dual tail set up. If you buy the microheli dual tail housing, that is about $25.00. Then you have to get the carbon fiber tail stand at another $11.00. Then two eflite 9.99 motors (19.98) or if you use the esky tails 6.30 each (12.60). Boom, your up to about $56.00. Yes the tail holds nice, but you pay for it in weight. The tail is way heavy, causing you to really place a lighter battery far up on the battery holder.

Being able to compare both, the DD mod wins it for me. I like the weight, durability, flight characteristics and total cost of this mod.