Personally I disagree, I've researched both Leopard and Crested Geckos and the cresteds seem easier.
Crested geckos do not need any heat source as long as your home stays in the 70s, so that eliminates the need of a heat pad and thermostat for a leopard gecko.
Cresteds only need Crested Gecko Diet to eat, you buy it in bulk and don't have to worry about insects, no worrying about gutloading or dusting, both of which are absolutely necessary to have a healthy animal.
Cresteds and leos are about the same price, although.
Both can be kept successfully in sterilite tubs, on paper towels, leopard geckos needing more floor space as they are terrestrial, cresteds needing a taller cage because they are arboreal.
Plus the original asker didn't want a gecko with a fat tail, Crested geckos don't get any kind of fat tail. Some may not have tails at all - when a crested loses its tail, they don't grow it back.
If you don't like the look of a crested, go for gargoyle geckos, the care is mostly, if not all, the same. Gargs do regrow their tails, and I've heard of them getting somewhat larger than cresteds.
If you're willing to spend the money, there's R. leachianus, leachie or new caledonian giant geckos, hella expensive, guaranteed to become somewhat cage aggressive, can reach the size of someone's forearm, but their care is basically the same as cresteds and gargs, I love these guys. So much I got one, lol.
Speaking of my r. leachianus, he's doing good. Luckily he's still sweet, so not cage aggressive yet, he's still not interested in live food so my crickets are still useless, growing well and is 21 grams and about 4 inches head to vent. Having some humidity problems so I'll have to mist more often, it's because I added a lamp to his part of the shelf to raise his cage's ambient temp a bit and give him a temperature gradient.