The speed booster is probably the way to go. I should have gotten one a long time ago. Yes, it adds a bit of length and bulk, but there are a lot more good affordable options when you can use SLR lenses at their designed field of view, plus you get a bonus extra stop of light. I like my Minolta MD Rokkor 28mm/2.8. It renders well on the Fuji sensors. The older MC Rokkors are nicer in terms of build, but they are a lot bigger and heavier, and sometimes may lack the better coatings of the MD series. There are two logical approaches to this problem. One is the Frankie method, where you figure out exactly which lens does what you want, and then you buy it, whatever the price. Then there is my way, which is to buy a whole heap of cheap lenses, adapters, filters hoods, lens caps bags and bodies, end up paying out even more money, and usually find that one lens or the other will do most of what you want most of the time. The advantage of my method is you get a lot of variety to work with, and can build up a complex set of overlapping systems. The advantage of the Frankie method is that you get a better lens.