I just got back to Cincinnati from a western clients road trip which ended up in LA. I have a 2018 LC500. I do not know anything about the LC500h.
The LC500 can easily cover 800 to 1000 miles a day and has a range that is slightly north of 400 fun and stress free miles. It's a little harder to get in and out of than an SUV, but once you are in, wow. Im 6'3" 245 lbs and it fits me like a glove. One of my associates is a bit larger and he complained a little trip up to Chicago, that he couldn't get comfortable. But hey, he owns a Dodge Caravan.
People are complaining about the tech, but I have no issues with the track pad. Since it has run flats, I carry a tire plug kit, fix-a-flat, and 12V Air Compressor in the trunk. If you source those items properly, they can be placed in the trunk battery compartment (away from the positive battery terminal).
My Performance package has 21" wheels, carbon fiber roof, rear wheel steering, Torsen Diff and deployable rear trunk spoiler (and some other stuff). You will get a better ride if you get the 20" wheels (like on the base model) because the sidewalls will be thicker. But on most roads, this isn't an issue for me. Having said that, my next set of tires might not be run flats.
The carbon fiber roof gives you some additional headroom that is consumed by the sunshade on the glass roof models. I did most of the trip in ECO mode. And in ECO mode the rear spoiler will not deploy at any speed. Deploying the rear spoiler will cost you about 2 MPG regardless of valve timing / drive mode.
I've never owned a vette. Certainly with the LC, you will need to get comfortable with having people around your car every time you pull over at a rest stop. Be prepared to either be a ****, or answer a lot of questions. I don't really mind as long as its about the car and not me. The LC, and the people in Japan that created it, deserve all the admiration this car gets.
I stopped by Jim Faulk Lexus in Beverly Hills for an oil change and talked to them about some abnormal inside tread wear on the right rear tire. It was in fact, out of whack and required adjustment at 15k miles. So if you get rear wheel steering, you will like the way it works, especially in a U turn, but you should probably have the alignment checked every 10k or so.
After an oil change, double check their work by looking everything over and checking the dipstick oil level. Mine was not at the top mark on the stick and since the oil level sensor is at the rear of the block, it sent me a warning about oil level when it was being valet'ed while exiting a steep parking garage. Topping off the oil after service stopped that alert.
The brakes are ferocious. If you don't like brake noise from time to time, you can have the dealer fit passenger car brake pads. Personally, I just backup at 20 MPH periodically and stab the brakes, which clears any glaze and makes 'em quiet again. Tom's in Japan makes some LC pads that reportedly put out less break dust.
The factory wheels are gorgeous, but keeping the barrels clean, with the Lexus LC performance brake pads, is a continuous cleaning issue. All in all, the LC is not on performance par with your vette, but the way it puts power down is remarkable, and at 94 HP per liter, it doesn't need 20 heat exchangers. So one would expect it to last a long time with minimal service / repair, which is usually the reason why people invest in Lexus in the first place. Just get to a dealer and drive one. (not talking about the hybrid).
Make sure you try out some of the Auto Drive stuff. These features really translate to enhanced safety while reducing fatigue. Don't install a clamp on the steering wheel to defeat the "Put Hands on Steering Wheel" alert. It doesn't want to drive by itself, those features are just there to help.
I ordered mine in Aug 2018 and it was delivered via enclosed trailer to my driveway in early October 2018 with 14 Mount Fuji (I presume) test track miles on it. Look over and understand the options very carefully. It's never a good idea, in my view, to spend that much money and not get exactly what you want.