Why Ixcoin though? There was no IPO, but there was a premine of 565,000 coins. I'd say go with I0coin, if you're going to resurrect the dead.
Speaking of dead, i0Coin died some 3 or 4 times, to iXcoin's ZERO deaths.
iXcoin is nearly 8 times more secure; that's one awesome good reason to choose iXcoin over most alts, including iZERO.iXcoin is much more evenly distributed compared to i0 since i0 gave out such massive block rewards, in a relatively short time-span without merge mining (cause it kept dying while merge mined due to memory overload issues) and is most likely heavily hoarded by very few people.
i0 stands for iZERO And there's nothing cool sounding about that and it shows the lack of creativity of the devs which tells you a lot about any coin.
iXcoin has special hidden messages [most likely buried inside the code by the CIA or Aliens] where i0 is just a very confusing coin with no special, prophetic, illuminati messages. Haha!
Finally, the biggest and most important reason: I own a boatload of iXcoin but none i0Coin but I'm an educated, observant and objective guy, I'm sure there is no Confirmation Bias in my judgment. Haha.
But seriously, there are a lot more good reasons. Like iXcoin is the only coin to show a long term positive correlation to Bitcoin where i0Coin has had nothing but troubles the entire time and can't seem to go up in price even when Bitcoin is rallying.
iXcoin is oldest of the 2 coins; where i0 is actually a [bad] copy of iXcoin.
The devs of i0 coin thought they were being clever [again] so they dropped the block time to 2 minutes; hence, making i0Coin very unstable compared to iXcoin [and Bitcoin].
iXcoin is the only exact twin of Bitcoin so it can literally take the leader, head on, like we're about to do with CounterParty - Whatever Bitcoin can do, iXcoin can do
Better AND Cheaper (thanks Friction). Why risk the time, work and money on a coin like i0 which has a history of instability when you've got everything you need in iXcoin?
There are other good reasons but these [off the top of my head] reasons should be enough.
Basically, i0 offers no advantages over iXcoin while i0 has some severe disadvantages compared to iXcoin.
And like I said last year:
When Wall Street comes in this year, they'll see the same thing I see and when you're putting your future, time and money into a coin you don't take any chances. Chances like with a coin dying which then only leaves iXcoin and Devcoin for the best, time tested secured coin candidates.