Lightweight front rest or heavy?

[Quick]

G'day all,

I've been looking at getting a joystick rest top for my Caldwell Rock BR rest. I've been looking at the shade tree and they also do a lightweight F-Class base to fit there rest top and this has me thinking as the Caldwell is really a heavy mother to lug around in my range bag and this Lil rest looks nice and relatively light.

So I'm thinking this: get the shade tree top for my Caldwell rock BR or sell the Rock BR and get the shadetree top and base for FO use.

What's your advice gents?

Shaun