I'm in North Carolina, and our weather pattern has been similar to yours. March was warmer here (mostly low 50s), but still cooler than usual. April began with a blast of heat (upper 80s to around 90), and we're just now beginning to see actual spring-like temps in the 60s and 70s. My earliest rabbiteyes began blooming in late February, and several of my Southern Highbush quickly followed. I didn't begin to see any active bees until late March, and then only a few. Nonetheless, I definitely have a lot of developing berries, so pollination doesn't seem to have been a problem. As was discussed in other recent thread, bumblebees are very efficient, and one can pretty much take care of an entire bush in a very short span of time. So, I wouldn't count your early bloomers out. There might have been a few active bees here and there that you didn't see.

Thank you, Brushworks, for the information about the site lines and screens, very helpful. Regarding the screen being visible from the street, I noticed that the screen on a friend's Milgard double hung windows are hardly visible, while the screen on ths Certainteed sliding window was quite noticeable. In my opinion, the Milgard looks better, but then as I recall the site lines were not equal.

Can't help with vinyl but we had our entire house redone in 2009 with Marvin Infinity windows. They're a fiberglass composite material. Stronger than vinyl and the frames are fairly narrow for a replacement window. Here's a shot of our kitchen window. Hope this helps.

Its okay. Definitely a drop back from the 400 and not really as good at the Integrity either. I tend to be with the other posters that I am leaning towards that option as your best. You can always ask them to come off that price a tiny bit to see if they can soften the delta.