Pegasus are an excellent company for car hire and I've used them several times in the past and never had any problems.
However, I'd always recommend, whichever car hire company you use, to take photos of every body panel, all glass, including front and rear lights, tyre tread and the interior including the spare tyre and tools in the boot, when taking the car on. This could save you getting an unexpected claim later for damage that was already on the vehicle.