The TM recoils are awesome, they feed all the BBs they have great recoil, they are accurate and dependable.
I looked into the Masada reviews and its accuracy without mods isn't all that impressive. Its certainly sufficient, but this is a gun that doesn't come with tightbore by default for its inner barrel. It does however have a quick change spring and barrel so you change the power and length quite easily, but it doesn't have recoil or bolt locking. The MOE handguards are pretty nice, they are light and adaptable. I think the main disadvantage of the gun is it only takes their magazines, so they are kind of expensive. Its gearbox is propriety but the parts internally are replaceable with the usual parts.
I can't find anyone doing a full breakdown, whether it uses bearings on the spring guide, bushings or the quality of the cylinder head etc. But all that stuff can be replaced in time if it wears out or you want to get better more reliable compression,