The 9411's are Top of the line Max. Torq plus unmatched holding power and percision coupled with the duralite 1600 6volt rx pack(same wieght of a 300 nicad)and fly untill your ready to go home,with out charging .These servo's are the ones I have been fying in my 3d practice planes with no problems. although you can't get the 6volt duralite packs anymore. I'm glad I stocked up onthese packs before they couldn't get them anymore.Also have 12volt duralite pack in 10x JR TX I Charge it Once a week and I fly almost every day My opinion is if you have to ask the price you don't need it!!!