Need help with Final Decision in NOVA

Any thoughts on these choices would be appreciated. All will be DH Vinyl replacements.

Okna Insul-tec 500 (installed by Windows on Washington)
PGT Spectraguard 2360 (installed by EcoStar Remodeling)
Berkshire Revere (installed by Window Universe)

I'm told the Revere model is the same as the Alside Excaliber which seems to have more than its fair share of detractors. I'm wading through the same overload of data as you are but I seem to consistently hear good things about Milgard, Simonton, and Okna lines.

Those 3 are excellent windows. I have it on good authority the poster went with the PGT Spectraguard.