Hello! I'm about to buy 20 clu048-1212c4-353h5k2. I have a question though, I can get these from digikey for $22 a piece which is rough in comparison to cdi but cdi is out of stock. I also found the h6k2 (below bbl) versions on ebay for 11 each piece. From the spec sheets the h6k2 don't seem that different from the h5k2 version. Is there any reason to avoid the below bbl version at half the cost? also has anyone bought cobs from http://www.ebay.co.uk/usr/export-estonia this vendor on ebay? thanks for all your help