I used TE for a long time, 9-10 years roughly. For most of that I ran an AH300-7 into two TE 4x10s in a loud punk band and never had a problem with being heard if there was 1 or 2 guitars,mainly 1 though.
For the tail end of that I had the Peavey gen TE which was an AH600-12 into a TE 4x10 and 1x15. Never had a problem being heard there either! Norman Watt Roy actually borrowed this setup from me when he came to play in Aylesbury!
I also ran a TE V6 through both different cab setups, which when it worked properly, sounded really good.
So IMO I had no reliability issues with the main older TE apart from the V6 which would just die and pop valves randomly. The newer Peavey stuff, the cabs were fine but had a lot of issues with the AH600-12 Had to send it back and forth to TE to be fixed numerous times.
So I would say you can't really go wrong with Trace and if they weren't so heavy then I would have stayed with them!
They are also usually easy to find and cheap too for watt they are. (Da dum dum tish)