Just some things to add ?
If you just got yourself a Tremol-no then you can switch between fixed, floating and dive only and it completely replaces the claw so it's a rad upgrade and fills the blanks simultaneously ? and they're under like R1k, I have one on my seven string and it's super awesome, more for recording than live work, but still awesome!
Or you can get the Schaller sure claw, which is a vastly superior design to the traditional ones:
