From my perspective: Stay away! Braised in a few minutes by, DANGER!

A) 8 Watt [Green Line] LED spotlight 12V MR16 / GU5.3 warm white, "Lichtrevolution.de" for EUR 8.95 of the Green Line Trading GmbH.

B) Philips LED reflector Spot MR16, 12V, 6.5W, 36 ° / replaces 50W / 827/380 lumens / GU5.3 / white 19,284,800 for Eur 22,68

C) BIOLEDEX HELSO LED Spotlights Spot MR16 GU5.3 6W 450lumen warm white 2800K-extra 38 ° 50x55mm 12V for Eur 18.49.

A) was 8 watts most promising and does not even cost half the other two models. But after inserting and turning it lasted only a few minutes (if at all), since it began fürcherterlich to stink, the spotlight was Hot Stuff, and I've unplugged immediately. On one side, near the two pins, molten mass was herausgequollen (after cooling down again hardened).
The radiator has a CE mark, but I wonder how here any safety regulations were followed correctly, if the part can simply start so to stew. If I had not been there and the part removed immediately again: Who knows if it not even could catch fire. Stunk has it anyway disgusting intensive.

I'm going to now worthless spotlight not return because of the expense, but the first place, keep still as corpus delicti.

Maybe read so with even the manufacturers / distributors and highly here it?