I installed a set in my El Camino a couple of years back. As mentioned, they take a little work with padding to make right ( but I think even Mike's recommends some extra padding). So far they have held up well. I also bought extra vinyl from them to match, and did the door cards. I was going to buy extra leather, but they suggested the vinyl, as it's easier to stretch.
In my case, it was an easy decision, as they didn't have a pattern for my Acura seats, so they gave me 50% discount

For a show car, I would probably lean toward's Mike's. For a daily driver / cruiser, these are definitely better than some slip on seat covers that cost nearly as much.
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'87 GT , '00 3800 Series II SC, 4t65e, Vue Power Steering. (SOLD)