I bought a Makita TD020DSE a few months ago after reading some recommendations here and thought I'd report on what I think of it.
Good points:- It's quite light. I like the little built in torch. The batteries last well.
Bad points:- The switches don't come to hand easily. The bit holder is "back to front" (i.e. you pull the collar out to insert a bit, most unnatural and unlike every other one I've used). There's no speed or torque control at all.
It's that last point that means I don't use the TD020DSE as much as I otherwise would. It's far too crude to use for many screwdriving jobs. When you press the trigger you get whizz-rat-ta-tat-tat and there's no controlling it at all. My really cheap and nasty green Bosch 9.6 volt cordless is actually *much* more controllable and more powerful. I just did a test, the TD020DSE takes about twice as long to drive a 4mm x 4cm screw as does the Bosch PSR960 and it makes a racket while it does it. The PSR960's batteries are knackered though and don't hold their charge well.
.... and why on earth they supply two PZ3 bits with the TD020DSE I'll never know, it's incapable of driving screws that size.