Flowerhorns can get just as big as o's, if you maintain it properly i would decide on oscar, feeding will be more fun as they are greedy and eat anything where as a flowerhorn will prob stick to one type of food like midas do. theres plenty of baby oscars out there that need good homes and if your really not sure a nice o's is cheap, a nice fh isnt... watch the videos of o's swimming through hoops and under bars on youtube!-)
[video=youtube;7glq5-Dobnc]https://www.youtube.com/watch?v=7glq5-Dobnc[/video]
Let's keep it simple, the OP said vote only so it' no right to judge other things
For me if you can get your hand on HQ FL than I would go with FL other than that I'll stick with Oscar (low grade FL look ugly as hell).