How do you think they compare to Head High, Overhead, and 077XX? To be honest, I think the IPAs produced by Kane and Carton are right up there with Russian River. I think Russian River gets a lot of hype because probably about five or so years ago, Pliny the Elder and Pliny the Younger were about as good as you can get, but in recent years plenty of new breweries and beers have been popping up and while theirs are still very good, I wouldn't consider them the best anymore. Russian River is basically the pioneers of world class IPAs and they certainly deserve credit for that, but fortunately such quality is now being produced by more breweries.
Anyway, as for getting them here, if you're willing to make a trip to Philly, Pliny the Elder isn't too hard to find if you check
www.phillytapfinder.com every now and then. Right now it doesn't look like anyone is listing Elder as being on tap, but two places have Blind Pig. Philly is also one of three places that gets Pliny the Younger (the others being Colorado and obviously the brewery). The amount of effort involved in actually getting it makes it not worth it though in my opinion. You need to find out in advance which bars will be getting it and exactly what day and time they will be putting it on tap (generally late February/early March), and in most cases you need to get to the bar a while before that time to ensure you get some before it kicks. All for a beer that I'm not even sure is better than what is being produced right here in NJ and is always on tap at the breweries.