I was looking up cages by manufacturer before i bought one and originally was going to buy a Powers but the wait was around 3 months and heard customer service was bad.
So I ended up buying a RACING 905 CAGE.

I've heard that the older 905 cages didnt hold up to well to a good beating.
I ordered the newly designed cage for my 08' 750. I will shortly find out if it takes a good beating.

The new cage looks pretty strong, it's a little bulky due to bigger clearance between the engine and cage, Not like SI Cages.
(which in my mind is good so if and when it bends it wont smash into the engine, still has clearance if bent)
It has gussets welded into the corners of all the joints.(only company I seen do that)
One Down fall is that the cage seems to come pretty close to the shins. ( A Lil Padding Will Fix That.)

I give Aaron at Racing 905 100% for an overall Business Satisfaction. He was Very fast with my order..
I had my cage started from nothing to finished and at my front door in 7 business days. Customer Service was great, every time i called he would always answer or call back within minutes.

** So Does Anyone Know Of Any Other Down Falls On Racing 905 Cages?**
WHAT DO YOU THINK OF THEM?

 

I have a 03 gixxer 600, with a Si cage. i love me cage. I just started hitting 12 three months ago, and it has cup holders.

 

cup holders

 

Had a 905 on my 99zx: shin buster, would bend side to side, low sides in in turns when leaning. Did take a beating.
Got SI on my 07 zx taking the beating, hasn't bent, can drag knee, but has rolled on to the tank/upper, cause of the low motor mounts. SI all the way.