I would love a mtech bumpers but the problem is 1) touring 2) at the front it is not just bumper that change, its airducts and who knows what else that change
If you can't go for the M-tech bumpers I would just keep it standard, and maybe upgrade the headlights to the f/l ones if you have the pre-f/l. The e39 is on of the few modern BMWs that looks really good even in its standard form.
I would love a mtech bumpers but the problem is 1) touring 2) at the front it is not just bumper that change, its airducts and who knows what else that change