The dilemma is the budget. As a wildlife enthusiast the 150-600 is of course of interest to me but I have to say that I go hot and cold about it because the XF 100-400+TC1.4x which I already own is close to equivalent, although I have to stop down to at least f9 to get good centre sharpness when using the TC (like most wildlife photogs, I don't care about the corners because I mostly crop to the centre).
However, what people pay me for is architecture and objects. For objects, I am completely covered with the XF80f2.8. For interiors I use the XF10-24 which is a fantastic lens. I'm not sure I have used it much at anything other than 10mm. Now and then, though, it is not wide enough and then I have to take vertical panos and stitch. I know from owning the 8-16 that even that extra small difference can translate to a big difference on an interior.
I don't have the budget for both right now, hence my dilemma. Actually, I think I am going to save my dough and not buy either for the present! Maybe when the Western economies stabilise a bit next year my 'consumer confidence' will improve and I'll get both


