RE: your question;
I have a few simple house white wines, but like to try new >and on-sale
>inexpensive wines. Sometimes an inexpensive chardonnay >will be too
>flabby, so I mix it with a little Barefoot Sauvignon Blanc >to bring >the acid up.
>I was wondering whether anyone else here does this.
Too bad none of the professional wine snobs here answered you - but I will.
My circle does it for kicks quite a bit. We like to take a $150 bottle and mix it with a $10 bottle of a different wine Variety. The results are mostly better than worse.
We actually blended ten different cabs and the result was much better than any one of them alone.
You can also take two or more cheap bottles and blend your own "meritage", or two expensive ones or any combination you like - after all it's your money, and most of the "experts" here are nothing more than poetic blowhards who must lay awake nights trying to come up with complicated and clever wine descriptions.
If it tastes good to you - then it is good.