Hello Charlie,
Welcome to the forum and congratulations on your choice of motorcycle! Another screen question eh? Well it all seems very subjective and varies with people of different shapes and sizes so I can only really give you the opinion of a large framed bloke who is a smidgen under 6 foot tall.
Assuming that the stock screen offers 10% protection and the "perfect" screen offered 100% protection then I would rate the Triumph touring screen at just 30%.
Just a bit further down the forum you will see the MRA Variotouring Screen thread - I have recently bought one of these and I am very pleased with it. I would rate it at 70% and that's fine, I'm not looking for car windscreen type performance, just something to stop the "buffetting" and reduce wind noise which it does :-D
There is an album button at the top of this page which will lead you to a screen folder. I also have some photo's on my own website of both screens.
Regards
Gadget
[ This message was edited by: Gadget on 2005-05-09 03:13 ]