Erentals.co.uk - has anyone used them?

Hi All, this is my 2nd entry and my first thread. I am grateful for all your help if possible.
I've googled the words erental.co.uk, but nothing has come up besides from their own website. (compact car - renault megane or similar for 7days for £173 inclusive of the usual things).
I am currently looking for the best deal for car rental in France at the moment, and i have got a really good price from Avis (economy car - vw polo 4dr or similar for 7 days for £176 inclusive of the usual things), but read a lot of negative reviews about them.

I'm stuck between going with a company that is world widely known, has the advantage of desk in terminal, but from what i have read, lots of negative feedback, one class size of car smaller than this other company that i have never heard of that is offering a car size bigger and cheaper, but more likely an off terminal site office to get the car.

Any advice appreciated.

Thanks:beer: