If cost is more of an issue than weight check out Induro tripods. The same models are available in alloy and carbon fiber. The prices are very reasonable for either and surprisingly, the alloy models aren't that heavy. I have an AKB-2 (cf equiv would be CKB-2) that features a ball head and will support up to 22lbs. I recently purchased a pan head for it and prefer that. I use mine to support a Calumet cc-400 and cc-401 4x5 camera.