I went to
www.sunstateaviation.com in Kissimmee Florida and they were excellent. Theres not many companies over there that will let you keep hold of an aircraft away from base and fly into other states etc because of insurance restrictions, however you will have no problems with them. They are very friendly and theres no 'hidden extra's'.
I paid $74.50 p/h dry for a 2004 C172 with all the bells and whistles, which worked out to £20 per hour based on two sharing (exc fuel which is about $2.90-$3.60 per gal. depending where you go) They're not the cheapest (but only by maybe a couple of dollars per hour) but it is reflected in the standard of the place.
Have fun!!
Jim