Wow, what a tough decision but I say Festae. I'm a Parachromis lover but there's just something more satisfying about a large pair of Festae. Red Tiger would run a close second though so I think either way you go, you won't be dissapointed.
id say festae. females get brilliant colors and males get big. ive never owned red tiger but from what ive seen in the past id would sure like to have some of those also. like alot of peeps said i dont think you can go wrong either way.
i have one that's grown probably two inches in probably two or months and another that's only grown about a half inch. my guess is because the one that's grown more is dominant. i'm really surprised how many festae threads there's been lately.