I usually cannot stand this show. The humor makes me sick. As did some for this episode. But Quagmire's overall plot was pretty good. The end could have made this episode a very great one, but with this show there needs to be a joke every 5 seconds or else it just isn't "good." So, this episode is the first new one I think I have ever watched, and it was actually good, for the most part. The sub plot was also pretty good, not humor-wise, but plot-wise. The end of that was gross though.
So, 6.0, a fair grade for a pretty fair episode. Now I can't say I hate/dislike every/most episode of this show