I keep thinking about that. The cheap ones (~ £120) are 4 or 5 tonne and i suspect work fine on easy splitting stuff but then so does an axe. The 7 tonne stuff is still affordable at about £250-£300 and I'd get one if I knew it would deal with everything my axe or maul can't....but its a bit much on a gamble...I'd hate to find it still couldn't deal with the big gnarly crotchy bits or such like. In the mean time, tough bits (like some of the bone dry apple I've just been swinging the stihl maul at) get set aside, and from time to time the big saw gets to chew on them
which is fun, and gets it done.
I suspected as much....its just 'yard tree syndrome' probably, I get alot of that