Plot vs Romance - what's your preferred mix?

Last week I wrote a review where I complained that the plot was a little too heavy on the romance and too light on the plot. The mix was about 85% romance 15% plot. Now I'm reading another book where I'm finding there isn't enough romance. It's 15% romance and 85% plot. I don't think this would bother me if not for the fact that the romance is a huge plot point, yet there's very little time spent developing the love between the characters. I'm left being "told" about their love, rather than "seeing" it unfold.

So now I'm wondering: Am I just too picky? I think my ideal is 65%-70% plot, and 30%-35% romance.

What's your ideal balance between romance and plot?