Help me pick out my next "truck" bike.

As I have been evolving as a rider so has my bike but it looks like we now have to split ways my newest setup is really picky and not always as quiet as I would like. According to Joe the problem is that I have reached the max that you can do with a top pull front derailleur and I need to go with a bottom pull. Which means a real hokey cable setup or a new bike.

The main problem is most bike shops point me to low geared stump pullers and I want to go fast as well as pull a load up a hill but I don't need anything smaller then 30 gear inches. So I am hoping those that know me can help me out as I want to defy the typical cargo bike stereo-types.

Joe pointed out a nice Trek X01, I like the idea of a cyclo-cross bike in general and this bike in particular but they have such low gears. My fantasy bike right now has a 54 tooth big ring and (180-)190mm cranks and is sturdy enough to add my Xtracycle to. Anyway I am not comfortable making such a radical change to a bike straight off the bat which is why I am asking here.

Also extra points for multi position handle bars and/or brakes on the aerobars.