There are actually four bulbs in that link. AB generally makes good stuff (I run their 175 SE 13Ks), but all you need to know about any MH bulb is here:
http://www.reeflightinginfo.arvixe.com/
Aquamedic also makes good stuff and quite reasonably priced for a German brand. I think of them as VW to Geissemann's Audi.
