Damn you're fast. More than half of your top 50 revealed already!
Can't Let Go - 10/10 - CLG is a perfect song.
The Roof - 7/10 - Good song but I'll agree with this: "Underrated by the public, overrated by the fans."
Stay The Night - 10/10 - If it wasn't for FLAB, STN would easily be my favorite vocal performance off of that great album. Adore this track. People complain that she's yelling on this song and Mine Again, but to me her "yelling" works much better on STN than MA coz the tempo is faster on the former.
Candy Bling - 1/10 - Why this HORRIBLE song is so adored by fans I will never understand.
Theme From Mahogany (Do You Know Where You're Going To) - 2/10 - I think this is a lame cover, but I see why you like it. It
is easy on the ears, it's soothing alright.
Sprung - 10/10 - You have no idea how glad I am to see this rank so high in your countdown, biscuits.

It's such a cool, lively song. Her belting is epic here. It's quite underrated in that respect. I just love the whole flavor of this song - it feels as though "Fantasy" was on steroids.
Fourth Of July - 6/10 - "I like it a little less now." Same here actually. Still a nice, breezy track.
Heartbreaker (remix featuring Da Brat & Missy Elliott) - 8/10 - OMG! I love that performance.

You should also watch their performance on Oprah if you get the chance. It's hilarious. At one point Brat shouts "Opraaaaaah" and I just LOVE how O gets down to the song. LMAO! Like this song better than the original too.
Fantasy - 9/10 - It's a great uptempo...
Loverboy Remix - 5/10 - ...while this one is...

...fun if you are in the mood I guess? lol I prefer the original personally.