The 1/8 scale pro sell very good the volcano the backdraft in elec and nitro are all good sellers stock up alot on the nitro start kits and the work stand and nitro fuel we sell tons of these items. The pro series are more durable then the other series so they are great. Learn and drive as much as you can with all the rcs so you will be able to help your customers and the new airplanes have been great sellers as well.