It's probably worth noting that the issue was with the Maxfire lamp assembly, not the flashlight itself... this is important because the Maxfire LX will accomodate nearly any P60-compatible lamp assembly, as Quickbeam pointed out in his review. So, you can get the nice, perfectly-centered P60 assembly from Surefire and stick it in the Maxfire LX, or use the BOG 3W LED drop-in (something I'm thinking about doing) if you don't like Maxfire's bulbs. There might even be other lesser-known options as well; it's entirely possible that other comparable 6V Lithium-powered lamp assemblies might fit.
One credit to Maxfire's LA, however, is its low price. For $5 per LA, anyone who uses the light enough to replace the LA regularly, or who simply wants spares, can afford to stock up easily. Surefire's P60 LA, for comparison, is listed at $17 on the SF website - over 3 times the price, nearly as expensive as the Maxfire itself, and almost half as expensive as the G2 you'd otherwise be putting it in. That's a lot of money for a single, breakable component with a limited lifespan. So, the value-conscious Flashaholic (if you bought a Maxfire instead of a G2, you're probably value-conscious) could order 3 of the Maxfire LAs for the price of one SF LA, test them all, and get the faulty ones replaced. When you do the math, from a value standpoint, the Maxfire's LA is still an attractive option as long as you remember to evaluate them before putting them to work (as you probably should be doing anyway.)