I have a modern 150mm Nikon and a 150 Rodagon. Both are excellent, and I can't tell the difference in the prints. I also didn't pay more than $100 for either if I remember correctly in mint condition. I have a 180 Componon S and it's also excellent, but I use it for 6x17 (I'll have to try it for 4x5). So you really can't go wrong with any of those three in my opinion.