Logitech are the only keyboards I have any experience with (Love the company, so I have stuck with them over the years). Check the link for a set of listings on amazon.
While I can't vouch for the other brands, if the ~$35 for a Logitech is too much for ya, there are literally hundreds of other options. You are going to get what you pay for unfortunately. Do you mind if I ask why the backlight is so important? I have found the lighting on my Logitech to be distracting while I type and often just leave the setting on "off".