i have a 5'8" bing puck & absolutely love it in anything under about chest high. i originally envisioned it as a summer longboard alternative, since i get bored pretty quickly riding my 9'6" log day after day, week after week in the summer. but it's proven surprisingly versatile; works great in chop or clean, small & punchy or small & soft...anything in the chest high range or bigger w/ some punch behind it & it's a little TOO fast, but as a 90% of the time summer board, it's perfect.
link:
http://www.bingsurf.com/surfboards_puck
yea, it's not a TRUE mini-simmons, but it's pretty close...the quad makes it a bit more responsive, i think, than the keels set way back on the tail would. but i've never ridden one, so that's just conjecture on my part. i do know that i'm totally stoked w/ my puck, which is what matters to me.