Good choice - I use the 680B with the 234RC and a few luggage straps tied round it (for tying onto railings, lamp-posts etc). Spent 2 weeks in the USA with it this month instead of taking my tripod. I reckon I only missed 2 shots (out of 800) through lack of support.I use a Manfrotto 681, which slightly heavier duty than the 679. I wouldn't be without it, particularly with my 300mm f/4. I strongly recommend the Manfrotto tilting head 234 (or 234RC with quick release) which is easy to use and works very well.