The "Vent" is an awesome crossbow. It is a 150 lb. though. It doesn't come in a 165 lb. model. You really don't need the 165, as the 150 will give you plenty of speed. (400 f.p.s.) It's difficult to build an arrow that flies well at the speeds the 150 or the 165 produces. You will like the Ventilator for sure. Give me a call and I'll be happy to shoot you a price.
I would actually probably go with the 125 lb. model myself, as 370 f.p.s. is plenty for most situations and will be much more user friendly. Just something to think about.