Cost Effective Windows

[Kevin Colwell]

Hello all,
I am currently in the process of purchasing a four unit property in my area. This property has windows that are old and out of date and this seemed like the area to post this question. Could anyone please advise me of a brand/type of window that you folks use in your rehab projects. I have been looking around at windows and there are so many choices I was curious which ones you prefer or get you the most for your money. Thank you for your time.
Regards,
Kevin