Hawk kits are "old school" but very high quality. The tubing is thin wall (before it was cool) and tends to have a higher resin content than comparable "Wildman" or Performance tubing.
I own a Bad Attitude and Proteus. The Bad Attitude booster has landed twice without a parachute due to snapped shock cords (long story, has since been fixed) with only a cracked fillet. I also have a 4" Lil' Nuke upscale that I built using Hawk tubing and it has flown twice.
The pricing may appear high on Hawk kits but do not lose sight of the fact that you receive a complete kit. You get high quality components with precision cutting and machining, Av Bay setups (for the most part), and a recovery system that includes Rocketman or Skyangle parachutes. I would LOVE to own a Jumanji, I just happen to have too many 4" Rockets with 3" mounts...
Buy with confidence, Alan is a great person!