stick to one type?

[curious]

hi all,
I need a break!!
okay, I am going in the next couple of days to pick up some wine, and I am curious (as always, lol) as to whether I should pick an area, region and focus on wines from that location. Such as, do I stick with US wines, or French wines, or other country, as we experiment? Or would it be better to pick a type, such as Rieslings, or Muscats, and try out the differnet brands, then move onto the next type.
Right now, all my brain is focusing on is my seminar paper, and so I can't get it to focus on anything else (except what my phone bill will be, after calling various universities' gifted programs).
Janette