HMF cranes are more usually found as clamshell grabs, builders merchant cranes, and smaller T/M sizes, but more recently seem to be having a bit of a push in bigger knuckle boom hook cranes.
I used to use one twenty odd years ago, on a underlift recovery truck, from memory it had no bad habits, and was nicer to use than the other crane on the yard, where I worked at the time, you'd like too hope they`ve not got worse with age.
Last year priced a new one, to replace my currant PM, On paper the current ones seem to be quite compact, taking less chassis space than their competitors in the same weight class, and a slightly less dead weight than some.
Cranes newer than around 2010 had to have a lot more safety sensors on them, out rigger and legs, and more complicated cut out systems (read electrics and ecu), so more scope for breakdowns, progress they say.