Both the provia aspect and provia endure are much better than anything window world has to offer. To me, window world is a budget window for a budget oriented consumer.

Thanks. I figured that was the case as the Window World window looked cheap. I will scratch window world off my list. I am leaning toward the provia aspect series.

The Provia Endure is decent. Its a fairly proven window chassis used by some other manufacturers, they are relatively new to making windows. I'd be careful not to confuse Provia's deservedly excellent reputation for entry doors with their windows, at least not at this point. The key with this option IMO will be getting a good installation. I'd try to get another quote or two from high performance vinyl choices like Softlite, Okna, Sunrise, Polaris to compare. I agree with WG to drop the other option. There are some things in life where going cheap may be okay, but a large investment in improving your home really isn't one.

Sunrise has been owned by Window World, along with Milford, for a few years. I believe the V4000 window that MI sells is actually the Sunrise v4000 series.

I don't know what the shift in owners has done to Sunrise windows, but that is what is being sold by MI. Most say MI sells construction grade windows. I can't figure out who sells who these days.

Two US auto manufacturers?

As Todd stated, Window World does not own Sunrise. WW uses MI products in some locations. The old Sunrise brand is no more, but those windows are now being sold under the MI brand umbrella. I have yet to hear of any WW locations selling the old Sunrise product, but who knows. I'd be surprised though if they did, as that is not an inexpensive product. Its still produced in the same factories with the same higher end quality and performance.... Whether that will continue for the long term is anyone's guess.

I have a ProVia Aeris, and it has black mold. It has been problematic since install.

What has "black mold"?

The window had black mold at the time of install?