I was left entirely unpleased with Five Stone Tax Advisers after using them to contest a residential property tax assessment in Austin.
There was almost no communication from them during the entire process, and when I called them each month to try and get an update, the agent on the phone just stated there was no new information.
I did not even learn of the results of the process until I received an overdue bill notice from them in the mail.
Fortunately (I guess?), the bill is only for about $20, as they did almost nothing to reduce my property tax assessment (unlike my neighbors, who used a different service and had theirs reduced by thousands).
I will not be using this service again, and could not in good conscience recommend them to others.