quality of distributors

I replaced my knackered looking dizzie with a new one from a well known landrover shop about 2 years ago. It ran better and used less fuel - excellent I thought.
Landrover broke down on me on the way to work today after running a bit rough for a few weeks - thought it was prob the head gasket gone.
On inspection tonight I had a quick check of the timing - miles out which was odd since I checked it at the weekend and it was fine.
I just happened to catch the rotor arm when putting the cap back on and it moved! I gave it a bit of a tweek with my fingers and it would freely rotate (without the engine), on taking out the dizzie I found that the rotor arm would rotate with the drive held still.
I took it apart and the little gear section in the spindle that throws the weights was so badly machined and the metal quality so poor that it just slipped.

looks like buying a new dizzie was a bad idea after all, real made in China special.

So, having popped a ducelier back in and it runs sweetly (borrowed) which type of dizzie should I try and get hold of (2nd hand, no cheap remanufactured rubbish)

Lucas 29 - as it was originally?
Lucas 45
Ducelier

which is best?

Al.

um, isn't the rotor top supposed to move - 'cos of the centrifugal bit of the advance mechanism? - or does it go all the way round? My Ducellier exploded some years ago and I got a Lucas 45D4 and it's been fine ever since.

all the way around unfortunately

Ah. Lucas one's shouldn't be too hard to source - BL stuck them on all sorts of engines. Got mine from a motor factor a bus ride away from where I broke down.