Cp,

The sizes are roughly equivalent, so far as overall size goes...a size 5 Vibrax is about the same length and blade size as a size 5 Rvrwhirler...the Rvrwhirler will be a little heavier, though.

Right now Silver is the only finish we have in stock on the size 5's...they come in gold, too, but we are currently out of stock on those.

Thanks for your interest!

Fish on...

Todd