2 Door Jeep Wrangler Rubicon is the all around choice because size matters off-road. As others have said, D44's and lockers from the factory, the ability to run 33s stock, or 35s with just a budget boost, and an extremely good aftermarket to cater to your wildest or mildest dreams. Comes available with a stick or auto, so if you want a manual you are in luck, and the optional hardtop is 3 pieces of awesomeness that lets you take off just the front portion for open air fun.
Easy and common parts availability is important. A defender 90 looks cool, but who's going to have parts when things go bad?
The JKs also have infinitely better on-road driveability of the TJ, so the sucker will even be more pleasant when you commute or run around during the week.
The only weakness is the subpar engine, but at least the gearing is there to support 33s cleanly since the factory setup is already 32s...and of course you can regear.
Just a great package. Want a little more light, you can put off-road light housing where the sideview mirrors are. Easy to put on a winch friendly bumper. Being body-on-frame it can be repaired easier.