The V2's are plenty reliable. Of course a lot is going to come down to how well it was taken care of by the prior owner.
When you say "all the upgrades" I assume you mean it's been VX'd with the VX drive/detents and has the gold bolt.
Other than routine maintenance there is nothing about this version of the Clone that would put it in the unreliable category.
If you have any specific questions about it feel free to post them up!
I would recommend picking up some of the newest Militia Lube if you don't have any already as it's spectacular http://www.aggressivesports.net/inde...&product_id=84