Three days with him is already insufferable enough. Spare me from further torture!
I really really liked the Ring of Pacts system on RW. Now I'm tempted to grab a copy of the one on the PS2 (It was 11/12, right?) but that means I'll have to grab a PS2. I'm pretty sure mom wouldn't approve of that. >_>
13? Is that the one with Lightning in it? If the word 'round the net is to be trusted, you shouldn't buy it. It's touted as the game that ruined the series, or so I've heard. Devil Survivor 2 is pro. The only negative compared to Devil Survivor is just that they decided to take away the ability to give your demons skills through Macca Bonuses. There's an entirely different system for that, called the Add-On, which, for me, was far inferior than the Macca Bonus one.
But they've added a new feature that kinda sorta makes up for it called the Compendium, which lets you replicate demons you've fused/bought in the past--for a hefty price. If you've got the Macca, it's a real good way to get fusion material demons and/or fill your team with 8 of the same, brokenly powerful demon. XD;