After a good ten years of servicing me infallibly, I accidentally dropped my Minolta Flashmeter IV (snagged the strap off the table), and now it gives unreliable readings. I have no idea who, in the UK, might service the machine, so I am looking for a replacement until I figure this out.

Within my non-budget of necessity, and rarely needing most of the Minolta's facilities, I am looking at:
Gossen Lunasix-F (used, around 50)
Sekonic L-308 (new, around 130)
Gossen Digiflash (new, around 160)

I used to own the Lunasix-F, have never used a Sekonic, and rather like the pocket-sized form factor of the Digiflash.

Any other opinions on which I should purchase and why?

Cheers,
Tobias