Roeman,
I dont know if I have ever spoken to you but the 175 is no longer available but the 200 optimax is taking its spot, the 200 opti is worth $1500.00 more than a 305 , As for the V6 you have to take in the weight difference a 4.3 is only 225 hp and weighs 534 lbs whereas the 305 takes up 6 inches more space but weighs 432 Lbs and produces 260HP. the 4.3 is ususally $280.00 more than a 305, as for buying an 18 ft boat,I would suggest you look for a little larger boat if possible as you will want to upgrade to a larger boat within a few years. you will also get a larger selection to choose from.
Give me a call if you have any questions, I like seeing people happy with the decision they make. dont forget the sportsman show is right around the corner. Take as many different boats for a test drive on a river in the conditions you will be running them. If the dealer does not do test drives walk away.
Thomas
604-857-5387