Up until now I have had decent luck with smaller arows (2.5 inches and larger). Have a 2.5 Black Aro with no sack (yes it is a Black Aro) and he is now about 23-24 inches. Had a 4-5 inch Silver that I got when it was 3-3.5 inches but the 3 inch Jardini I had him with in my 300gal killed him. I had the 3 inch Jardini up till about 12 inches and he died a after we moved to a new house.
I'm not entirely sure what direction to go. I keep thinking find some young Black Aros around the 4-5 inch mark, or maybe get a Lech, but then I think if I gonna spend around $200 bucks for a Lech I might as well see if I can get a Green for a few hundred more, or I can just go simple/cheap and get a small Jardini for ($30-$50 at bout 4-6 inches) or a small Silver (4-6 inches). I dunno yet. Is April/May and Oct/Nov the times young Black Aros are typically available?