Hs225mg
The only thing to remember is that this is a mini servo. It may say 60 or so oz-in of torque, but shock loads are what strips servos. The gears in these are smaller than in standard servos. This may have 60 oz in of holding power, but you'll find better resistance to shock loads in the standard size servo. Do some searches here on RCU, there are many horror stories about the 225BB, and some about the MGs too. I would recommend the HS-77, it's got 10 more ounce inches of torque, is a standard size, and only weighs .3 ounces more. I know this is a sensitive subject and there WILL be people below me telling you that I'm wrong. Just do the searches, collect your own info, but you will come up with the info I've provided here. Hardcore 40 sized 3D = No mini servos, even metal geared. FYI: The 225MGs have a critical gear that is made of nylon, so in reality it's only marginally stronger than it's BB counterpart.
Reid