That post is old (days? 
). I've dropped the nick names in favor of their real names: Boost HL and Boost HX. Simple, to the point, can be shortened to HL or HX, and the manufacturer named them that way, so what could be better?
OSRAM LED’s for max throw
Color Part # footprint (LED surface) Max/Pulsed Peak Output (A)
White – KW CSLNM1.TG – 3030 (1mm²) W1 3/3.3 A 4.5-5.0 A (W1/NM1)
White – KW CSLPM1.TG – 3030 (2mm²) W2 5/6 A 7.0-8.0 A (W2/PM1)
White – KW CULNM1.TG – 4040 (1mm²) 3.3/4 A ~6 A (Boost HL)
White – KW CULPM1.TG – 4040 (2mm²) 6.6/8 A 9 A (Boost HX)
Red – KR CSLNM1.23 – 3030 (1mm²) W1
Blue – KB CSLNM1.14 – 3030 (1mm²) W1
Green – KP CSLNM1.F1 – 3030 (1mm²) W1 3/4 A 6.5 – 7.0 A
Green – KP CSLPM1.F1 – 3030 (2mm²) W1
Yellow – KY CSLNM1.FY - 3030 (1mm²) W1
More OSRAM Website links
Just fyi, if you follow the links to the individual LED's above, you may notice the W1, W2, and Boost HX are in full production phase, while the Boost HL is in End-Of-Life and not recommended for new designs. This may explain the availability issues.