I think the only issue with HH is that there is a lack of competition. I called many vendors outside of HH to see if they could provide estimates for various work but they either don't travel "that far" or they can't meet the bond requirements.
So, while HH is great for the all-vendors in one place, you don't have options.
For the record
... I had MTS install my new charger
and batteries and they did a good job. There was one or two issues which could have been a real problem but we worked those out.