Chardonnay tasting.

A few weeks ago I decided that a good way to familiarize myself with a variety of wines and styles would be to buy three different examples of the same grape from different places totally (countries) or from smaller appellations in larger regions (Cali Pinots as an example).
I started off with a few Chardonnays....
2009 Christian Vergier "Eros" Macon-Villages 12.5% abv.
c- pale yellow/gold.
a- brioche, creek water (corked), white flowers.
f- acidic, zippy. honeysuckle. the slight corkiness adds something in this case.
89
2007 Argyle Willamette Valley Chardonnay 13.5% abv.
c- pale yellow/green.
a- oak, nut, acid, tart green apple.
f- light buttery oak, campfire, apple, marshmallow/vanilla medium finish.
87
2009 Joseph Drouhin St. Veran
No notes taken, but like a nicer entry level(10$) macon-villages.
88
The winner here was the Vergier "Eros". Great food friendly wine at a decent price.

2008 Louis Latour Pouilly-Fuisse.

I got this bottle on sale at my local wine shop. I believe it was 22 on sale. Not too bad. I have kept it for a little bit and occasionally see their dwindling stocks and wonder if I should buy a few more. So I had to come to an answer.
This wine pours a great golden/green color. I get honey, citrus, some pineapple, butteryness, minerality in the nose. Honey definitely lingers on in the mouth, with citrus more predominate. Once swallowed, tastes like buttered popcorn. There is no oak.
Again, value comes into play here. This is not the best Pouilly-Fuisse I have had, and the best I have had was in the same price range as this was on sale. Last night I tasted this wine and found it pretty bland, today seems to be a little bit of a different story. Last night my rating was 81, today I'll bump that to 83. Why?
The bourgogne chardonnay I reviewed two posts down was about half the price and as enjoyable and about the same quality level. Why spend more for something that is the same in those respects?