Take a look at the thread below - I asked a similar question and someone recommended the Kenu, I also bought one and it's great! http://www.rsmegane.com/showthread.php?t=2628
I'm just got one for a dci and it doesn't really fit the vents very well and it points the phone upwards rather than straight up. If didn't like the Kenu, I'll stick with brodit http://www.dsldevelopments.com/brodit/resultsproclip.asp
Just seen this on another thread: http://www.kenu.com/products/airframe Picking mine up from Currys on the way home Paniro
They were my pics in the other thread, the Kenu is great bit of kit, quality is good, comes in very handy now that I use the iPhone sat-nav rather than the Garmin unit. I take it out and pop it in the Wife's Fiesta, whenever I use it, small enough to pop in your pocket.
As above I bought the kenu after seeing Scoobyr's original post. It's great, nice and small holds my HTC one snugly and doesn't move no matter how energetic my driving is
I've got a RAM Mount for track days its a brilliant bit of kit. So much so I now use it with "Maps" on my iPhone its a bit pricey but if I'd have bought it first time round I probably would feel that way. Must have tried tons of the wee £6 - £25 types none of them stayed stuck or if they did the vibrations on the video were ridiculous.