Parking express is pretty much your best bet, i've left mine there lots of time with little hassle, there is also a sizeable customer service centre on site, too.
but with these you do have the hassle of waiting for the car park bus outbound and inbound, plus need to think about what to do with luggage. I used to drop wife, kids and luggage off at terminal and then wait for the bus. For my last 3 trips i took the plunge and used valet parking and have had no complaints - super smooth and no additonal 1000 miles on the clock! Its great to walk out of the terminal and have your car waiting for you if you can put aside the joyriding/taxi/damage concerns....!
I normally pre-book with Holidayextras.com. They find the best rate and Parking Express has been the best most often.
Bit spooky that 'they' see you coming and your entry ticket pops out with your booking ref. on it.... But it works!
How long you away for?... my car looked like it was growing mould on rubber window seals when i got back. Probably engine fuel residue... and remember to take a piccy of the cars next to you!! as they can be tightly packed in some places
Parking express is pretty much your best bet, i've left mine there lots of time with little hassle, there is also a sizeable customer service centre on site, too.