I've got the Gitzo 1177M on mine with a Manfrotto 323 RC2 QR plate on it, works well and it's nice to have the head that matches the tripod. It's lightweight and fits between the legs when they're folded up, I think anything too heavy and bulky defeats the point of the traveller tripod. I got the 1177M on Ebay for £40 and the QR plate was about £25 I think.