Hi angrydragon, Manfrotto and Giottos are both good brands but it is the age old story in that you get what you pay for. I use Giottos tripod and head and find them more than capable of supporting the camera, power pack, flash and lens all adding up to a fair old weight.

If you look at this one below , this is similar to what I have the head will support 4kg and has spirit levels to help you get the shot right and is good value at a smidge over £80

(Giottos MTL9251B + MH5011 Head Tripod Kit)

This is the nearest equivalent for the Manfrotto stuff

Manfrotto Tripod Kit 190XDB & 804RC2 3 Way Photo Head

I don't think one is necesarily better than the other it just comes down to personal preference I suppose