I'm currently on my first aro, which is a little Panda RTG from the October order. So far it seems to me that if you've been keeping fish for at least a year or two, you should be able to manage an aro if you do your research before actually acquiring one.
More succinctly, if you've raised a small fish to adulthood, then you've as good a chance as anyone in the normal stream of things at raising a healthy fish. That is, providing you have enough money to afford all the food you'll be feeding it. Being an active member on at least one Aro board definitely boosts your chances as well.
In my opinion, a RTG makes most sense to start with because as long as you care well for your fish, you'll have a gold fish with probably iridescent purple or blue, vs. a green with no colour; jardini who's too aggressive to keep with anything else; or silver who will eventually out grow even the largest of home aquariums.
My next choice is a Xback because then you'll most likely end up with a even more gold fish with even more iridescent colours, vs. a red which may or may not develop colour in the next 5 years.
I've yet to see any pics of the reds which were ordered from Panda. It'd be nice to see how the orders have turned out thus far.