Hi guys, I am offered a choice between a 500C/M with an Opton 4/50 and a 2000FC with HASSELBLAD 80MM F/2.8 T* F PLANAR, both with some extra stuff at roughly the same price, about 600 euro. Which of the two would be a better choice? I know of the 2000FC shortcomings, my only concern is that I have never seen an Opton lens and I have absolutely no idea how it performs. Recommendations? Thanks!