Been there with the TDM 3B, and I know what you mean. I bought mine for commuting, and in a nutshell, they're really boring, and not particularly good at anything!
I can understand how your finding it hard to find a bike for your size, and an adventure bike is probably right for ya. I've got mutant long arms and legs, and on the Fazer it gets a bit cramped after a while.
What about a tiger 1050? Perfect for a chap of your dimentions, and you can chuck them around a fair bit. And pillion comfort is really good.