Phaeton – Engine recommendation and running costs

Yes Servus together, you love Phaeton friends! I have found this great forum now and will be hammering something right now…: Due to the very cheap used car prices, I think about buying a VW Phaetons. Of course, nobody needs to tell me that you can’t let yourself be blinded by the cheap prices. That the maintenance costs are more expensive than other, normal vehicles is clear. Now clear text: What do you have for running fixed costs? – What do you pay for your insurance? – What do you pay for taxes? – What do you pay for annual workshop costs (inspection)? -> And here’s this: Must it be the original VW workshop with a 6 year old Phaeton, or is it not at least as good, but much cheaper, with a free workshop too? And now to the engine: I would like to buy either the V6 TDI or the V10 TDI very much more. In price terms, on the used car market, it doesn’t make any difference. Now your experiences: Which engine is to prefer and why it’s more expensive? I’d like to keep up to buy the engine again?