With another trip to France coming this year and sporting an additional new family member, i have to get a roof box (we just about managed it last year without the box with only the one kiddy

I thought it would be helpful to have this thread as a guide to roof rack/box/bike options to then add into the FAQ section after?
I am looking for the best and lowest profile roof bars/box for the rs4, but also want to be able to fit 1nr bike alongside if required in the future. I have searched all relevant posts which got me to this point now

Prorack aero x bars - I like these however think it would be a squeeze for a reasonable size roof box and 1 bike holder? - Photo thanks to Jonesy07. looks to me like a box could fit alongside but i have no proof/photos of this - anyone help?
P.S Can anyone confirm the section size of the bar itself as thule box grab fittings only go up to 80mm wide bars?
http://www.roofbox.co.uk/scripts/rbvehs ... woVzVOcSpP
http://i413.photobucket.com/albums/pp21 ... photo2.jpg
Thule A4 specific 757 feet with wing type bars - Photo thanks to Targa27, think this is probably the correct route as it can be used on future cars, is wider etc but not as low profile as the above

http://www.ebay.co.uk/itm/Audi-A4-Avant ... 1c286d2d5b
http://forum.rs246.com/download/file.php?id=13980&t=1
Thule more generic 775 feet with wing type bars - these are 2cm lower profile than the 757 which to me which is good, i think these fit the a4 although a bit mor work than the 757's above, however these could be a happy medium between the aero bars and 757's?
http://www.ebay.co.uk/itm/Thule-Roof-Ba ... 1e6b241467
Ebay slimline jobbies - Not sure i could trust these over the above items so probably ruling them out.
http://www.ebay.co.uk/itm/Audi-A4-Avant ... 35b957139f
If anyone has any pics of the above combinations or others it would be most helpful.
Thanks
Steve