I got one of these....
http://osomount.com/shop/osomount-p...-in-car-holder-for-iphone-5s-5-4s-smartphone/
It's really good as it doesn't take up any space on your windscreen/air vents, so you can leave it in permanently with no problems (assuming you don't use CD's, but most won't nowadays).
Here's a few snaps of mine with the old GS3 in, easily fits my new 6+ though.
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Looks good I have a BMW too

I know the tone when you send a message is the backwards tone. I mean when I receive a text when my phone is unlocked the tone is the one I have chosen however when my phone is locked I just get the 'Glass' tone ping.