I know what you mean - I got a sampler 12-pack from Wild Rose, who make a fine product up here in Calgary, AB. While I am fond of all of their beers in their own way, I realized that it was the IPA that resonated most with me.
This coming weekend, I am going to brew up two variations on the IPA theme: an India Black Ale, and a Rye IPA. There is quite a variety amongst IPAs - enough that you can completely dedicate yourself to IPAs and always have something different and enjoyable.
But really, why limit yourself?
When they are all done and ready to drink, I will probably have to try ihomebrewing's taste test suggestion.