I must agree with eddx, cheap tripods are a total waste of time and money. They lull you into a false sense of security ...Now $200 might seem a lot for a tripod, it is but I have plenty of friends who brought the cheaper alternatives and within two or three weeks came back to go and buy Manfrotto.
b - a Bogen/Manfrotto Tripod System that will last you years (my dad still uses his from 20 years back an it is fine, just a little heavy). For your I would recommend the 190xProB with a 486RC2 ball head. With the more professional tripods you buy the legs and head seperately to get a more custom set up. The cost is around $200 up wards, here is a link to get you started.