In my opinion the eXTCy is what the ion should have been when it was first produced. The clamping feedneck, on/off asa, and blackheart board, with the price of $250 ensure that there is nothing that you have to upgrade to make your marker usable (ie: old ion feed necks, crappy board and asa). They even made the on/off button much easier to use. I have upped mine over a couple of months, but it shoots great stock.
I have been using mine for over a year and still love it. I use my eXTCy as much as I use my ego or axe because it is such a good shooter. GOG made the eXTCy what the ion should have been, and put it within the price range so anyone can afford it. With all of this said, I have had great experiences with GOG's customer support as well. You can't go wrong with this marker as a beginner pneumatic. I still use mine all the time.