We've updated our reliability stats for the G to include owner experiences through September 30, 2016. In terms of repair trips per 100 cars per year (lower is better):

2008 G: 39, low
2007 G sedan: 59, moderate

We have two additional statistics, "Nada-odds" and "Lemon-odds", to indicate the percentage of cars with no repairs in the past year and those that required 3+ trips to the repair shop:

2008 G: 70, 3
2007 G sedan: 61, < 1

Additional participants always helpful.

For the repairs behind these stats, reliability information on other models, and to sign up to help improve this information:

Infiniti G reliability ratings and comparisons

 

so an 08 sedan is the way to go?