I'll chime in here too. I have a 2023 New Defender 110 that I've put 17,000 problem-free miles on since last summer. I love it and it's the best car I've ever had. I test drove a Grenadier Fieldmaster for the first time this past weekend. Rutted trails, winding paved foothill roads, highway up to 80 mph, and even pulled it into a crowded parking lot to see how it works in the "real world." My take is that the two vehicles shouldn't really even be compared to one another. They're totally different and clearly built for different purposes.
I was very pleasantly surprised by the Grenadier. I knew it'd be capable off road, but it was shockingly good on the road too. Great seats, great visibility, surprisingly smooth, felt like driving a bank vault. I loved the safari windows! They made the cabin feel roomy and gave me a great view of the mountain peaks as we were driving up to the trails. And I got used to the steering after 5 minutes so it was a non-issue. But... lots of little things make it clear that the dollars spent on developing this vehicle all went into the frame and drivetrain and that passenger comfort and convenience were a distant second. That's not a knock...that was a purposeful decision by Sir Jim and the team. But it's full of hard plastics and other cheap-feeling materials, tiny low-resolution backup camera, no rearward visibility, no seatback pockets on the front seats, no grab handles to get into the back seats, no ski pass-through or 40-20-40 fold down rear seats... I could keep going but you get the picture.
Land Rover also made a choice...they made a more complicated, less capable, but significantly more comfortable and convenient SUV. I wouldn't trust it to take me on a three month overlanding trek across Africa, but it gets me up into the mountains in Colorado, South Dakota, Wyoming, and Utah just fine. And when I'm driving it to work or to the airport or my kids' sports it's insanely comfortable and easy to live with. The New Defender is a great example of a modern 4x4 that seamlessly blends capability (good enough for 99% of the population) with comfort and technology. If you spend most of your time on the road, you'll be supremely comfortable. The Grenadier feels like the best possible execution of an old-school 4x4 that is significantly better than it has any right to be. And it's cool as hell!! But as soon as I got back in my Defender for the drive home I knew that I'd have to talk myself into buying the Grenadier.
For now, I'm trying to have the best of both worlds. I may still buy the Grenadier and my wife would drive the Defender. Would be great having both vehicles in my garage. I'm not supposed to take delivery until the spring so I have several months to figure it out.