If you want to go cheap, you might want to try Aussie 3-Minute Miracle or the one by Garner Fructis (also called 3-Minute something with a green lid). If you have a Sally's near you, they have knockoffs of more expensive stuff for really inexpensive prices. The knockoff of Joico K-Pak is very good. If you use a deep treatment with protein in it, be sure to use a good moisturizing conditioner afterwards.
Jessicurl has two products that are good - Too Shea! and her Weekly Deep Treatment. I've tried the Too Shea! but not the other one. I have fine/thin hair that needs lots of moisture and the Too Shea! didn't weigh my hair down.
Hopefully you'll get some other suggestions .
CG-modified since 4/05 2b/3a and 3b on occasion! Products: The hair aisle in my own cabinets.
Best definition winner: KCCC
Best volume winner: LOOB
I really like the loreal vive nutrigloss for curly/wavy hair. I find that if I try to use a leave-in condish with it that I end up overconditioned so I consider it to be pretty moisturizing. They also have a "deep treatment" in that line, but the only difference I see is that it has more protein in it which my hair is a bit finicky about
Fine Wavy (2a)
Weeklyish shampoo with CO's inbetween to keep down the grease.
I recently bought some Jojoba oil. Just a tiny amount (dime size) is enough to make a huge difference on my long waves. I usually apply it wet just before my gel, but it can be used as a great treatment too.