circulation for 120g

[fishface]

so i'm needing more flow in my tank, at the moment i've got a few small MJ's and a snapper return that's split into 2. i wanna get more and hopefully chaotic flow without breaking the bank...i would love to hear other's experiences or recommendations. how bout a wavebox for instance? would that be a bad idea, i know they take up alot of space but can you put them in a back corner? anyone else have one on a 120g? or what about a pair of 6100's on a controller? better idea? or not, i have no experience with either so i appreciate your ideas