"Anything I should know about these Lee dies? I wouldn't think so, but I know some folks say they are not as good as the others."
Yeah, and then they stop; no meaningful data to support the statement. Lee has been selling dies for a very long time, if they weren't as good as any of their type that wouldn't be true. Fact is, our guns will never know what brand of dies our ammo was made with! Most dies have small user trivial differences that some people like or dislike but, functionally, a die is a die so a competent reloader can use any of them quite easily.
Those who don't understand why Lee's handgun expanders are made the way they are often 'fix' 'em to defeat the function they are made to preform but, if you're not using them on a progressive press, that won't matter. Ditto Lee's soft seat lock rings. Those who mistakenly think dies should be locked in with wrenches or pliers tend to hate 'em but there's no reason to install dies more than hand tight and for that the O ring design, properly used, works great. I have a lot of dies from a lot of makers and haven't felt a need to change a lock ring on any of them.
I can't imagine using new dies of any brand without cleaning them first. (Ditto before shooting a 'new' firearm, etc.)