thanks for answering folks....
As far as i know, i mean a genuine VW rns 510, just that its refurbished; i have asked them what that means and apparently it's just units that have been returned to the factory for some fault, then fixed and sold on to people like Hazzy Dayz Ltd. I would love to pay £500 or so less, but fear stops me. As it stands i have 3 options:-
1) Get VW to do it, but that will cost in region of £1800 or so, and they are not specialist audio fitters..
2) Get some after-market company to fit said RNS 510 and paid c.£1000, and still get warranty...
3) Buy from likes of e-bay, take possession, not have a bl**dy clue how to fit it, and i mean that believe me, have no warranty, and if ask VW to fit it for me, have it confiscated if said unit fell off back of lorry....
Thus, i am really tempted by Hazzy Dayz, yes i would be paying a fair bit more, but still considerably less than what VW would charge me, and i would have peace of mind that its fitted correctly...
If i had your confidence and know-how, id probably buy off e-bay but i am a nobody when it comes to techical
Am i being really skilly here??