I'll second that configuration. I used a Nikon D300 and 10.5 lens on a NN5 Lite, on top of a Manfrotto 438 compact levelling head, on top of a Manfrotto 055XProB tripod. All very sturdy but as said heavy. But then saying that what is the cost of having something that you feel you can rely on and you know is definitely fit for purpose.
I also use the manfrotto 055proB but with out a head at all. I do not extend the centre column for panos.
It is a quite heavy tripod to cart around so the carbon fibre versions are better still though more expensive.
There is actually little to chose between tripods of this size and weight, they all do an excellent job.