My full Quiver of Kites contains a 1.7m, 2.3m, 3m, 3.3m, and the 6.8m.
For those interested in getting into it to feel the rush of power, a 2.5-3m is enough to wet your pants and scream like a little school girl.
quad lines kites provide braking, and reverse launch capability, but a twin line steerable foil is still a hoot.
This 3.3 was my first, not too expensive at $150 shipped, which is a great deal.
Buster Soulfly - PKD KITES USA
My wife's Beamer 3m is an excellent kite too, but is double that price, but also is twice as responsive as the Buster Soulfly.
HQ - Beamer V
if people are interested, peak here for great deals on used gear.
Wise words of advice, don't go any bigger than 3m for your first foil. I keep mine in the back of the car for spontaneous fly, as a foil simply rolls up into a small duffle bag,
Power Kite Forum - For Sale