What are the Tell-Tale signs that you have bought a good quality Sky Ray King?

I used to get all of my SRKs from Fancygoods or from Ric at CNQ but CNQ do not have SRKs anymore.

What are the Tell-Tale signs that you have bought a good quality Sky Ray King?

Better still which web shop has the best reputation for dealing with quality SRKs?

Thanks guys for all the info and help on BLF.

If you have a lux meter, the output on high should not drop significantly within the first 5 minutes of use.

If you don't, you should feel the heat heat up fairly quickly on high. I would say you should feel some warmth within 30 seconds depending on the level of current it pulls.