Whatever you do DON'T let Hanson's or Weatherguard into your home... high pressure, scumbag sales tactics.
Renewal by Anderson has a really nice product but they are crazy expensive! 4-5 times the rest.
Wallside was the only one that was no pressure. We ended up going with them and we have no regrets so far. They aren't the BEST windows out there, but they are 100 times better than our 45 year old rotted wood single panes and the price was unbeatable.
I would also consider some of the pella and anderson ones at lowes and home depot, but the window is only as good as how it's installed. The sub contracted installers they use would be a crap shoot.
Just my $0.02