I dislike the TM M40A5 due to the reasons you listed. Volume is too small. That being said, it has a really nice and smooth bolt pull, and the hop up chamber is very well done, albeit rather complicated. It also uses a feed tube instead of a feed fin, which is a plus in my books. Feed fins are ew, no matter how good they are. Mancraft makes a hpa unit for this thing which solves all the voluming issues if you don't mind hpa/co2.
The VFC M40A5, I do not have very much experience with it. I hear good things about it, if you're talking about the gas version.
The only thing I have extensive experience with from your list is the Ares MCM700, so I'll keep most of my comments focused on this gun. It's okay, but I feel like it's overpriced for what you are paying for. The hop up unit is plastic, though it is TDC. VSR compatible rubber, barrel, and bolt. Proprietary trigger unit/sears. Most units these days are version 2 units that have a 90 degree aluminium sear, which holds up alright, but I wouldn't do higher than a 500 fps spring. Bolt pull is choppy and feels like the cylinder grinds against the sears (because it does). The cylinder also has terrible compression. You can upgrade the gun with springer's mcm700 trigger and swap out the stock cylinder for a vsr-spec cylinder, but this gun leaves a lot to be desired in its stock form. With upgrades, it can perform like any other vsr, but the plastic hop chamber worries me in the long term. Mancraft also makes a hpa unit for this gun, so that's also an option.
The VFC M40A5, I do not have very much experience with it. I hear good things about it, if you're talking about the gas version.
The only thing I have extensive experience with from your list is the Ares MCM700, so I'll keep most of my comments focused on this gun. It's okay, but I feel like it's overpriced for what you are paying for. The hop up unit is plastic, though it is TDC. VSR compatible rubber, barrel, and bolt. Proprietary trigger unit/sears. Most units these days are version 2 units that have a 90 degree aluminium sear, which holds up alright, but I wouldn't do higher than a 500 fps spring. Bolt pull is choppy and feels like the cylinder grinds against the sears (because it does). The cylinder also has terrible compression. You can upgrade the gun with springer's mcm700 trigger and swap out the stock cylinder for a vsr-spec cylinder, but this gun leaves a lot to be desired in its stock form. With upgrades, it can perform like any other vsr, but the plastic hop chamber worries me in the long term. Mancraft also makes a hpa unit for this gun, so that's also an option.
