Adam helped me out with that same question!

He suggested to go with VPI x VPI, or VPI x Lemon....as both would make killer supers. Lemon supers are supposedly more subtle supers, they aren't the knock your socks off quality supers.

I ended up choosing a VPI male and a Lemon female. I went with the lemon pastel female because he recommended to use lemons for crosses/combos, as they normally enhance combos. Supers are my short term goal (2-3 years), long term I want to produce Hypo Pastels, and Super Pastel Hypos...as well as a few other crosses.

Hope it helps some with your decision!

-Jason