let's say I've got the entire contents of a typical 1-bedroom apartment that I'm looking to put into long-term storage (3+ years). I'd be willing to store it anywhere within 1-2 days driving distance of NYC, since I'd only have to visit the facility twice (once to drop it off, once to pick it back up after several years)... which area of the country do you think would be the best bet for cheap (physical) storage?