the we the people is a pretty sweet looking ride, as is the hoffman...the thing about the EP is that it's SUPER short, as it's a flatland bike, so unless you want a dedicated flatland bike, or are under 5'6", you might want to go with something a little bigger. check out the complete FIT bikes, the frames aren't the same quality as you'd get if you just bought like a series one frame, but they're still pretty good bikes.
i just checked out the WTP dare devil, and it says the seat tube and chainstays are high tensile steel instead of 4130 chromoly. that might be a problem, as having stiff chainstays is pretty key in learning most tricks. weaker tubes will flex more (taking up the energy you're putting into pulling up) and make a less responsive frame. also, high-ten steel isn't as stiff as 4130, and will break if you ride hard. the seat tube being made out of hi-ten isn't a very good idea either. the seatstay/seattube joint is pretty key, as there's a lot of welding going on there, and a lot of heat. the more heat that is put into a frame at a weld, the weaker the tubes are going to be. most frames crack at either the head tube, or the seat tube for this reason.
maybe look at the WTP four seasons complete
, pretty much the same components, but with a full 4130 frame. the four seasons frame is really stiff and strong.
most of the lower-end haros are made with hi-ten steel, and the ones that are actually full 4130 have stamped dropouts instead of carved dropouts. and the tubes are thinner than a higher quality bike. in my experience, stamped drops tend to bend easier, even if they're really thick. and thinner tubes, while they may be lighter will dent easier. a friend of mine rode a haro flair for about a year and eventually had to get a new frame because the dropouts were totally thrashed and he had dented the downtube and chainstays from grinding.