I really like the smaller Studio Series π Speakers - They sound great and offer a lot of performance for the price. The current favorite is the two π tower.If you've got the room, you might want to look at the larger models too. The Professional, Premium and Stage series are the best, as you might guess from their cost. I really like the Theater Series too - They really grow on you, and are the most popular of the large format models. And if tubes are in your system plan, then you might want to look at the Thermionic Series, which have a classic "vintage sound."
Let me know more about what you're interested in, and I'd be happy to make more specific suggestions. Once you've got it narrowed down, I'll send you the plans and you're on your way!