I came across this link tonight and thought it was worth sharing. If your team is on the fence about spending a little extra money on a decent wire crimper, this should remove any doubt from your mind.
To summarize: a guy benchmarks a pretty wide variety of crimp tools (with videos). His test fixture uses a digital load cell to record the maximum force applied (in pounds) before the crimp connection fails.
http://forums.sbo.sailboatowners.com...d.php?t=125926
(not all of these are featured in the videos)