Rented thru them 3 times, cars we have had have been a little older than we usually get with Dollar but what car you get with any company is hit and miss.
We rented thru USrentacar and got free upgrades each time (from Intermediate to Full size) on collection had to fight for the free upgrades, telling us none available, one we collected was not even intermediate so straight back to the desk.
Not my choice of rental company but if the price is right then yes I would use them again.
We used them for a Port to MCO drop off after our cruise earlier this year, no problems and great service considering I had mistakenly booked the car hire for the following day DH is still reminding me of this!
I have booked with them through USrentacar, for the last few years, and again next year, never had any probs with them, and cars have been qood, have had a Chevvy Malibu last 2 years, a nice car with i think about 9,000 miles