The 'Nikor' enlarger is a rebranded Japanese LPL. They were sold under many names - Rollei most commonly - and are pretty common on the used market. You don't need a lot of fiddly bits and accessories for it, like you do for a Durst. They are better built than the Beselers and Omegas. If the price is right, and it has the lens board, negative carrier and 35mm insert, and you can examine it, then go for it.
There was also a version with a sloped head/front - not as common and I've only seen them in pictures.