I know its been done a thousand times but I am really really stuck and could do with a bit of advice here please folks.

I am in a dilemma regarding what to buy.
I know it has to be a Bonatti Grey RRS with black/aluminium trim.
Rear headrest dvd is also a great choice (for son to watch)
Rear towbar to pull a caravan or my boat.
Centre Fridge.

My problem is I really don't know what to choose, either a 2.7 or a 3.6.
my budget is around £18500

rather than me searching here can anyone put the pros and cons of both on here for me please.
I have driven a 2.7 (without a remap) and thought it was ok. Is there much difference, I am missing anything?

Any help will be massively appreciated.

Thanks in advance.

Yep, your missing two cylinders lol Gone but not forgotten, 2005 RRS SC first edition, BMW 2010 Z4,TVR Tamora, TVR Cerb, MERC SL 55 AMG, E46 M3, Z4, Jag S type R, Skyline R33 GTR 640 bhp, Evo FQ 400, L322 RR, X5, Lotus Esprit V8 twin turbo, Lotus Elise 135r, Nissan Murano, Honda S2000, 911, Boxster s...and a few more

Now try the V8

It's in a different league to the V6. FF 4.4 V8 Soooo looking forward to this bad boy
Ex 2006 RRS SC - garbage
Ex 2016 135i M Sport - dream car
Ex 2003 RS6 Avant - piece of cr*p
Ex 2014 320d X Drive, M Sport Touring - ok I guess
Ex 2007 RRS TDV8 - bloody loved it
EX 2007 FL2 XS - not so bad

V8, every time

I have owned both and the V8 actualy does more to the gallon than the V6 on long distance (power to weight) it was 8K differance New but now not a lot, service may cost more & any work needed but what a great sound! RANGE ROVER SPORT 2008
White is the new Black

If you drive a TDV8 you won't want a 2.7 that's for sure. The 3.6 has a better base spec for starters. Oh, and the engine is quite good too...  2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

And they can be mapped to 320bhp

And they seem to blow turbo's more often than the TDV6

having driven a few 2.7 that were gutless i then went and tried the tdv8 to which is now my daily driver v8 all the way mate even if its a few more ££s

2.7 with a remap is a lot better that standard, with a good remap it is getting close to the later 3litre lumps.  In Spain - 2018 F Pace - Frightened away from the Sports due to crank failures
Gone - A couple of RRS, A couple of Disco's. However thinking of another Sport.

ok guys good feedback so far thank you.
keep em coming.
anything I should be looking for in the V8 as its looking more like the V8 is going to be the winner.

anything I should be looking for in the V8

Any garage that sells fuel and turbos  In Spain - 2018 F Pace - Frightened away from the Sports due to crank failures
Gone - A couple of RRS, A couple of Disco's. However thinking of another Sport.

you're not giving me much confidence in the V8 here SRE

The TDV8 is a better engine for the sport...

The 2.7 doesn't have the urgency of the 3.6 (it's almost a litre down, 2 cylinders and a turbo )

As stated above, once you've driven the TDV8 you really will not want the old V6

As for fuel economy, there really isn't much in it... maybe 2 or 3 mpg?

(Just to balance the anti V8 comments ) RRS gone
Audi SQ5...Gone Audi Q7 S-Line 240 3.0TDI Gone
Audi A6 Allroad Sport 270 3.0TDI

Type "tdv6 v tdv8" into the search facility and they're several threads covering all of this. It's been asked so many times before which is why the replies are so flippant. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed