I'd say the Funtana 40, UCD .46 or the Kyosho Flip. I believe the F40 is the lightest, followed closely by the UCD and I THINK the Flip is the heaviest. Someone feel free to correct me if I'm wrong.

I have only flown the F40 and I own a UCD .46. The F40 did want to snap out sometimes with excessive elevator application. I have over 60 degrees of elevator throw on my UCD and it will NOT snap with any amount of elevator application.