No sweat, its just a pet peeve of mine that most people think higher K is brighter, 4300k is brightest as most of us know. No worries!
Yes the Morimoto bulbs have had issues on our stock Hella ballasts (I have had issues myself), so I would recommend an OEM bulb, Philips, Osram, GE come to mind, how much do you want to spend? I can recommend bulbs from $70 to $180:
The Philips 85122 bulbs can be found here, I bought mine from this seller and they are 100% genuine perfect:
Philips D2S (85122) - HIDbulbsRus (70 shipped for a pair)
He also sells GE Xensation bulbs, the wholesale name is Vogt, same price as Philips and same quality more or less, you'll see them on the website.
If you want anything brighter than a Philips, Osram, or GE factory 4300k bulb, you'd have to step up to the Osram 66240 SVS, claims about 10% more lumens than a stock bulb, but at $185 for the pair, its not cheap!
http://www.theretrofitsource.com/pro...roducts_id=257 (Osram SVS, 185 shipped for a pair)
My advice? Just get a set of GE or Philips bulbs from the link I used above, I don't think the extra couple hundred lumens is worth 115 bucks extra, fresh bulbs are fresh bulbs and I know when I installed my new 85122's this summer I really appreciated the extra output a new set of bulbs can bring.