Is it really possible to get a tweed sound and a British sound out of the same amplifier? yep, you bet. The THD Flexi-50 does both and a whole lot more.
If you are looking for an awesome floor-based real tube guitar compressor, the Electro Harmonix Black Finger is highly recommended. It does come at a price, but may well be worth it.
If you are in the market for a top-shelf overdrive pedal, this pedal should be at the top of your list