Too little information. You need to give us the exact model, operating type, quantity, special features, colors desired, trim type, wall construction, climate, and house style.

IMO the Andersen 100 all-composite (PVC & sawdust) window is absolutely the ugliest window ever made regardless of any other redeeming features and I am aware of none. It has a bug-eyed appearance with no shadow lines and the top sash doesn't move for ventilation or tilt for cleaning. This window is obviously modeled after builder grade vinyl windows which puts them in a bad category to begin with. The Jeld-Wen Siteline is a roll-formed aluminum clad wood window. That alone puts it in a superior category but extruded aluminum cladding would, of course, be better (the roll-formed models rely on pressure treatment to prevent the wood rot that plagued the industry for so long) I would look at them carefully to be sure the roll-formed aluminum is well applied (overlaps at corners like Pella?). At least this window (with the optional 1" or 2" SILL NOSE added) has a traditional residential appearance with the appropriate sash placement, shadow lines and proportions that is totally absent in the Andersen 100. Black aluminum will be far more reliable than any kind of vinyl or composite material, however, I strongly recommend DARK BRONZE instead of BLACK. It will look softer and less harsh now and it will age better. DARK BRONZE is what you think is BLACK on modern aluminum storefronts. At least look at samples next to each other. JELD-WEN SITELINE DETAILS (with sill nosing added) ANDERSEN 100 DETAILS

@empathie00 - I see that @millworkman recommends "LePage". Good to know that they make bad windows and don't stand behind their warranties. We are leaning towards the Jeld Wen siteline. In spite of bad rap they've gotten on these pages, I can't find a window that's aluminum clad, that is customizable enough that it will be able to get through our HOA review process, and has a better warranty (at least on paper). Jeld Wen's auralast treated pine has a lifetime warranty against wood rot and termites. I've looked long and hard and I can't find anyone who claims that Jeld Wen failed to honor their wood warranty or their 20 year warranty for other parts/components of the window (including insulated glass failure). If you know of anyone who's had this experience with Jeld Wen's warranty department for the siteline product, I'd love to chat with them. We looked at the Marvin infinities (fiberglass), but in the DC metro area, we're just getting such lousy customer service and responsiveness from the local dealer, that I've lost faith/confidence. Also, in spite of the Marvin name, the Infinities have an inferior warranty to the Jeld Wen sitelines (in several important respects). If one of fiberglass's selling points is durability, it's baffling that they'd only warranty the fiberglass portion for 10 years, and include a whole bunch of caveats and exclusions that run multiple pages. It's noteworthy that's it's cheaper to buy and install Marvin Infinities than for apples/apples wood/clad product from Jeld Wen ("Jeld Wen Siteline"). This has been a very time-consuming process. Wish there were obviously better options, but balancing product specs (e.g., Performance Grades, warranty terms, cardinal glass packages, air infiltration numbers) with trust for an installer that just happens to install this or that window -- makes the process incredibly painstaking.

I have used both extensively (over 200 remodels - most had window upgrades). We used Blk/Blk A 100's on our place in Sacramento, CA (can see pics of both in our profile - 45th St used A100, Quonset for the Ply Gems). I was a little disappointed in them, honestly. They looked great and made the design element pop, but the single-hung units felt cheap and less-sturdy than many of the Ply Gems and MI's I have used in the past. Now building houses in TX, and again considering A-100's vs Ply Gem 500's for a couple projects. Pricing is a huge factor (both have good warranties), but I have not had ANY leaking with either window.