Fort Lauderdale Airport
Pros: We did get a car that fit our needs pretty much perfectly, but we seemed to be lucky since their lot seems pretty sparse. It was the most affordable option, but you get what you pay for.
Cons: Warning, the Ace rental shop at FLL is not actually at the airport. You have to take a 5 minute shuttle ride out to it. We were not told about this and spent a few minutes trying to figure it out before asking one of the airport employees what to do. The car selection on the lot is pretty sparse and unlike a lot of other companies you do not get to pick the car on the lot, they assign you one.
Lastly, DO NOT buy the fastpass option for toll roads at this store unless you absolutely need it. They suggested getting it because we would "most likely need it" and that it was "pretty cheap". We even told them where we were going and they said there would be toll roads, but there weren't and it ended up costing us an extra ~$11/day.
In summary the Fort Lauderdale Ace Car rental shop was the least expensive option for us, but we got what we paid for and will be spending a bit more money to go somewhere else in the future.