Pros: Ease of booking through Kayak. nothing else.
Cons: When I picked up the car, it was in a seedy location on a lot that was shared with uhaul. my rental was the only budget rental on the lot. The attendant looked like she just woke up in the back, and didn't do a walkthrough to check for damage (and there was a lot!), the car was filthy inside and out and high mileage. There was tobacco and trash inside the car, It smelled horrible inside, and the rental agreement from the previous renter was on the passenger seat. The rental was in chicago area but for some reason the license plate said Florida. It felt like the car was someone's personal car that they just decided to rent out. Also, the price of the rental i found out later was much more than other comparable car rental places in the area. upon returning the car, it was like a cattle call, they didn't say one word just gave me a receipt and walked away. I didn't get a chance to explain how bad the experience was. But I doubt they care.