If you check some of the earlier threds, there is some info on other screens.
I got the one from busters, cost £35.00 and looks very similar to the original but is a few inches taller and has a double bouble look to it. It works very well and is way cheeper than the MRA.
I saw a KLE for sale on Ebay not so long ago which had a MRA screen on it, but was not the one designed for the KLE but a universal type. I think it was the Highway sheld. I guess this would require some brackets or something to get the fit right but I must admit, It looked very good.
Hope this helps.
"Whats in that thing??", An R1 owner said.