Hakuba is another brand of reasonably-priced tripod you might look into if you want a carbon fibre tripod of modest cost. Whatever you decide, almost any tripod can gain you two to three stops more (slower) shutter speed if it is used well; what you are paying for in the higher end is more like 6 to 8 stops greater steadiness and ALL of the quality your lens can deliver. Thom Hogan's article is targeting higher-end shooters,mostly backpackers and outdoor photogs, for whom low WEIGHT is needed,along with steadiness, hence the $700 Gitzo legs and so on.