Hasselblad 180mm vs 150mm

I do quite a bit of lanscape photography with my Hasselblad system. Although I haven't directly compared the two lenses, I have read that the 180 CF is actually sharper than the 150 CF and a better investment. At $2000+ I'm looking for a little advice before I take the plunge. Can anyone comment of this speculation ? Thanks.

Check the previous threads. I have a CF180 and have also extensively used a CF150. The 180 IMHO is definately sharper than the 150--not that the 150 is a bad lens. I use the 180 for close portrait shots (i.e., head and shoulders, etc.) and generally have to use a Softar on it or my clients find the pictures "too sharp"--it brings out every imperfection. I also use the lens for some small pet photography, and it is incredibly sharp. The lens has a good very good feel to it and is a newer design than the 150. Everything else being equal, I would go for the 180. In a previous thread, one reader was trying to decide whether to trade his 150 for a 180. He rented a 180 and liked it so much he bought it! I believe the camera shop credited his rental payment towards the cost of the new lens. Hope this helps. The 180 lens is more expensive than the 150 both new and used.