I played at both Foxhole and Ambush this year, and their prices aren't that far apart. There was a paintball field down in Loganville, York County. That's getting pretty close to the Maryland border. There is also Revolution Paintball at Ski Round Top, Lewisberry, PA, which is in between Harrisburg and York. I know there is a paintball store in Hanover, York County, but I don't know if they are affiliated with any particular field.
I've had minor problems at Foxhole. However, they are located a few miles off the interstate. Ambush is a little further out of the way. They both have decent fields and Foxhole has several stores that they run (Linglestown, Lemoyne, and Middletown). On the other hand, I liked the treatment I received at Ambush better than Foxhole. If you get the chance, try both.
Tippmann 98 Custom; 12" black CP one-piece barrel; 32 degrees RVA; Palmer female Stabilizer with ring mount;32 degrees coiled remote; Redz FlexTech 4+1 halfpack; green V-Force Shield; RT Kit; LP Valve, LP Chamber, & drilled out hammer