Car hire has gone up quite a lot recently.
You don't say which airport or dates so I just did a random 2 weeks in August (1st-15th) from MCO.
I am using AutoEurope in August, they are very competative just now, they are quoting £275.54 less 8.5% Quidco = £252.12 or incl tank of gas and extra drivers £300.50 after cashback. Thats for Ford Escape with ac or similar Midsize, Automatic
Next size up is cheaper with Netflights at £280.06 after 5% Quidco cashback but very expensive if you add Gold cover. Jeep Grand Cherokee (or similar)
Best 2 SUV deals I can see.