ACE is now called something else. It's

Al Nesslinger's "company "

, RUN RUN RUN RUN FASTER FASTER........
Goggle ACE truck mounts and the first page will tell you everything.
Power Lines aren't bad machines BUT I wouldn't be buy one unless I lived within 100 miles of the manufacturer. You will have a hard times getting a local distributor to work on it.
If you are new to the industry or truck mounts buy a unit that is serviced by whatever local distributor you have close by (even if close by is a 5 hour drive, that's better then being down & on your own).
Stay away from cheaply priced, odd ball machines. There are a ton of low hour, used BIG name truck mounts that are selling for a reduced value.