Your best bet would be to ask or do a search in the window forum.

Did you go with the MGM? We are looking at getting them and I am trying to find reviews

Bottom of the barrel builder grade window.

do you have have them or know someone who does? In my area several people who have them have recommended them to us.

All well and good. I have been in the construction supply busness for 40 years. Never sold them but know people who unfortunately did. Nothing but issues. Non-existent customer service and mediocre quality.