Have been wanting to do the LR Experience for years and finally scheduled the full day adventure this weekend. Chose to go with the L405 and drove a 2019 HSE Td6 around. They have basically the full range available and you can request which vehicle you prefer when you book. While I didn't drive the L494, the one they have has the V8. They also have a beautiful 1997 Defender 90 they use for the Heritage program.
On a side note LR provides them with new vehicles each year. The outgoing models go to auction. The sticker on our vehicle was $96k, and it had about 2200 miles. It was completely stock including the standard 20" rims and tires.
I had zero off-road experience going into the day. Aaron was my guide, and he was great with his instruction and knowledge of the vehicle and course. He's highly recommended should you book at Biltmore.
The first part of the day was basically what I considered the bunny slope in retrospect. Learning when to stay in drive and when to stick to first gear (S1) as well as learning how to read the terrain and look for what lines to use. The afternoon was really quite tricky, lots of cross-axle humps, rock crawling, driving through some stretches of water (nothing too deep or long), and traversing various grades.
Even after driving all day we didn't tackle all the courses available, in fact a few were blocked by downed trees from an overnight storm. I'll likely do it again in the future.
They have four owner's days each year. It's very tempting to take mine at some point, although I'd need to ditch the 22"s! Loved the '19 L405. I'm up to 59k miles on my vehicle now and am set on upgrading to the next generation full size whenever it comes out.