Radio with Satnav and Bluetooth for hands free phone and iPhone music streaming

[GordonGT]

I am looking for a replacement radio unit for my mk5 golf that has a full sized screen, has Satnav and bluetooth conectivity for both hands free phone and streaming music from iPhone 4s.

There are a few units listed on eBay for around the £300 and I wonder if anyone has bought one of this before and can give me a review of them?

I was looking at the larger of the two systems in the mk7 golf the other week.
I know they are about 5 times the price but really liked the systems functionality and the way you get album art up on screen etc.

So the units I saw on eBay were:
http://www.ebay.co.uk/itm/VW-SAT-NAV-DVD-Golf-MK5-MK6-Transporter-T5-Passat-Jetta-Polo-R32-GTI-Seat-Skoda-/400421015649?pt=UK_In_Car_Technology&hash=item5d3af3d061

http://www.ebay.co.uk/itm/UK-VW-T5-golf-mk-5-6-passat-touran-caddy-sat-nav-DVD-BLUETOOTH-PIP-3G-6-DISC-TV-/290728500462?pt=UK_In_Car_Technology&hash=item43b0c4dcee

http://www.ebay.co.uk/itm/RNS-Style-7-HD-Touch-Screen-Sat-Nav-DVD-iPod-Bluetooth-for-VW-Golf-MK-5-MK-6-/251224853870?pt=UK_In_Car_Technology&hash=item3a7e2b0d6e

Can you tell me your thoughts please?
Do any of them come close function wise and performance wise to the VW unit?
Thanks

[Obbzi]

In my Mk5 I had a Pioneer F9110BT and does everything all in one unit! ipod connectivity, sat nav, bluetooth and plays DVD's, you can pick them up for decent prices now and they fit perfect! Built for VW's.

Infact I may be selling mine soon