I've been to Dublin a few times and may actually move there if a job prospect comes through in the right way. But it's pricey. A recent survey tied it with NYC for the 13th most expensive city world-wide. On the other hand, Boston didn't figure at all in that list and I know that on at least one other list it comes in more expensive than NYC, so YMMV.

Still, it's a nice town other than the fact that it's ALWAYS FREAKING RAINING!