Which grapes to pick for pyment?

[GhettoDickens]

My LHBS is doing a preorder for wine grapes, and I remembered hearing about pyment in some video or lecture I was lsitening to, so I want to put in an order and get some high quality grapes. The trouble is, I don't know much about wine grapes, so I was hoping someone could walk me through deciding which of the following three would be the best for a pyment...

Here are my options for Colorado grown grapes:
-Viogner
-Riesling
-Merlot

Here are the options for California Red Grapes;
-Petit Syrah
-Riesling
-Sangiovese
-Barbera
-Cabernet Sauvignon
-Syrah
-Merlot
-Old Vine zinfindel

If I had the money, I would sample wines made with these grapes, but I don't have funds like that. I know it is a lot of options, but even narrowing it down to a few of the better options would be very helpful.

Cheers! :rockin:

 

[gratus fermentatio]

I'd go with Riesling, for red I'd go with Syrah or the Cab if you plan on aging it a few years.
Regards, GF.