Thanks for replies.

Plumped for the Manfrotto 190CXPro4 in the end - have been very pleased with my 055CXPro3 to date, and I like the leg locking system better than a screw-lock type system.

Interested to read of +ve experiences with the Induro, UK prices pretty steep though.

Will be using the tripod this weekend with a trip up Cul Mor, a mountain in the northwest highlands of Scotland if the weather is ok...(never something to be taken for granted in Scotland at any time of the year !)