I have a Wintec, and the longer I own it the more I hate it. I *think* its a Wintec 500 Jump but I'm not absolutely sure. If you want I can check next time I'm at the barn.
Anyway, the channel is REALLY wide. It is five fingers wide in some spots. Its comfy, but ill fitting. I like the CAIR, it seems to really shape well to the horse's sides. Another complaint. The saddle isn't extremely well balanced, so when I widen the gullet even one size I lose any and all wither clearance. Its a "meh" fitting saddle at best. I'm probably keeping mine to have in the future when I need a saddle that fits okay on any horse. Or to sell it, seeing as I spent $90(!!!) on a gullet kit...
I'd say no to getting this particular Wintec. Also, if you're starting a horse in it, I'd recommend the Jump because it has a bit of a deeper seat. I'm pretty sure this is my saddle, because the seat is so deep I sometimes struggle to get into a two-point.
"The wise man thinks he knows nothing.
The fool thinks he knows everything."