I've sold a few cars on the various sites, I think landy's attract a "better" buyer, than certain cars at least.
Ebay - cheaper option, ad will receive views, but from my experience 95% of them will be time wasters
Autotrader - Exceedingly expensive nowadays, usually receives less views but equally less time wasters
Gumtree / Retrorides and various other free sites are a good supplement as well.
No doubt you've sold a car or two before, but anyone who phones and offers anything before asking a fair whack of questions (or more importantly viewing), is a wretched time waster and should be hung up on, don't even bother engaging conversation with them.
More importantly, is ensuring a good setup if someone does show enough interest to view. Make sure you have someone with you in the background (in-case you need backup, as such), I find some people turn up with 1-2 mates and can overwhelmingly get into everything, or worse be scammers / thieves, and try to distract you or cause deliberate damage to get money off. Equally don't send potential viewers straight to your home address, meet on an arbitrary (busy) street a mile or so away to get a measure of said person to make sure they're genuine before going to view the land rover. Equally, it shouldn't be viewed and tested near where you keep it. Do not let anyone test drive the landy without showing you their VALID driving license either (and ideally some evidence of insurance, you can always drive for them if in doubt). You also want to photograph this or memorize their name and registered address - on the off chance of them being dodgy even after everything else seeming okay. If you don't like anything, cut the sale off and don't pay any attention to pressure tactics, some people will really go for it.
A little extra hint, try and sell the vehicle between 9am and 5pm on a working day if at all possible, if the buyer wishes to pay and take it away immediately - this way you can go down the bank, have buyer withdraw cash, which you then immediately pay into your account, no possibility of fake notes or a reversible bank transfer of stolen funds then. A cleared bankers draft is also acceptable. An unwilling buyer is not a genuine buyer. The online reg transfer service from the DVLA is also available during this time, and you can immediately sign the vehicle over online, this is then effective immediately. So if they decided to travel with no insurance or tax or get a load of speeding fines you don't have the headache of arguing that it wasn't you.
Bit grim I know but a lot of crusty individuals are about nowadays and land rover theft / car purchase cons are both easy and frankly common, can't be too careful! Safest bet... Keep it locked up for weekend appreciation, it's basically an investment in happiness!