I'm one of the fans of the LPL enlargers. I use the 4500, have used it for years for both C-printing and B&W. I don't C-print any longer, but use the VC head for B&W, and it is seamless. ND filtration to keep exposure times precisely the same no matter what adjustments one makes to contrast. The 6x7 versions do not all have this ND provision (I'm really not sure if any of the 67 ones do) but are solidly built. They feel much more precise than a modern Beseler.
The modular design of the 4500 allows for simply swapping out the bulb & filter assembly if one wants to print color, or go straight diffusion without filtration. Very slick setup, super easy and quick. Mixing chambers are easy to sawp out as well. I have 45 & 35mm sizes, I gain an extra stop or stop and a half with the 35mm for big enlargements of 35mm negs.
The LPL 4500 is touted as "never needing alignment" and while this is a nice selling point it is not precisely correct. I do align mine, and alignment is a relatively simple project.
Some niggles with the 67 models: the negative carriers cannot be rotated, they are one orientation only. Alignment adjustment is less precise than on the 4500. We have eight or so of the 6700 models in my lab at work and they rarely need adjusting despite getting a pretty good workout from students.
khbphotographix are wonderful folks for LPL knowledge and parts from a lensboard or a retaining screw to a complete enlarger new or rebuilt. Their manual for the 4500 is worth the few bucks.
B&H also stocks the new units.
I never recommend Beseler any more. Since their reorganization they have become unresponsive to questions, and their quality control is down the tubes. Our school lab was once all Beseler, they are slowly being replaced with the LPLs. The last two 23CXLiii VC machines we purchased have been nothing but trouble, with heads that are both unreliable and extremely difficult to repair when something goes wrong. Getting my fingers or even a hemostat into position to reattach a spring that slips off a poorly designed hook to keep filters adjustable because the cover has been spot welded on rather than being made removable is an exercise in frustration. Especially when it needs to be done once a week.