I am not sure that Fiberglass is "greener" or more efficient and that also depends on what you are comparing it to. Fiberglass with have better thermal numbers than even a thermally broken aluminum. I would not eliminate a Aluminum clad wood (I think that is what you Weathershield option is) window from your selection options if you decide you want to another option. All things considered, you are going to have a hard time matching the aesthetics or build quality of that Marvin Integrity. Biggest issue with that window is the stock size program. That is a moot point in a new construction application because you can build it to whatever you need it to fit. That would be my choice if I were building right now.

I agree, afsa, we have been diligent about painting and caulking these all wood windows which I believe were either Huddig or Huttig (a local company which sold out to another local millwork company) for about 10 years now. I'm just tired of fighting against the elements. Every year I have rotten sills and rotten brick mold in the lower corners of the windows. I even had my painter remove the tracks that hold the sashes to caulk and paint behind them where water was obviously penetrating. The sashes are warping and the gas seals are failing, and worst of all there's wood rot in the sheathing below the windows behind the stucco . . . again!! I don't know if this is primarily a window problem, an installation problem, a stucco problem, or some of all, but my experience with all wood windows has not been good to say the least. Hopefully, new windows, installed and sealed properly will keep my home from becoming a bigger money pit! With all that we have spent on maintenance and repairs, we could have paid for at least half of our new windows by now. I a hopeful to find a solution :-)

I'd recommend looking at JELDWEN's Siteline EX product. I used to sell Marvin's for years and still do once in awhile. In my area, I sell almost 7 figures a year in JELDWEN windows. I can say that their quality is near Marvin's and is 30% less. They also have a color called "Artic Silver" which looks like clear anodized but is an applied finish. Anodized coating SUCK as they scratch easily and cannot be touched up. If you don't believe me, ask your dealer what they warranty is on anodized product. If they don't say 5 years or less, ask for it writing prior to ordering. Artic Silver is a 10 year warranty through JELDWEN(20 years if you look at their Custom series product, which is equal to Marvin). As for Hurd, if they're close to the same price as Marvin I would pick the Marvin if you're not interested in JELDWEN. Hurd is a crappy brand name and what's the point of buying "knock offs" if there's not enough savings to justify it? I don't go to the flea market and expect to pay 10% less. My advice, look at JELDWEN's Siteline EX product. If you don't like the quality, buy Marvin. Find a GOOD dealer in your area that knows what he's doing and you feel you can work with. Call the manufacturer and see who they prefer in your area(they'll give you their best dealer who buys the best). Lastly, remember pricing isn't everything. One mistake can easily suck out what you saved by "shopping around"...

You can't go wrong with either. This is really a function of which one you like the look of better. I could see a rationale for the fiberglass/wood if you live in a coastal environment with salt spray and water, but if that isn't the case....either will work great.