I'm a landscape person, similar subjects to your work I'd say. I went from a KM D7D (which I love) to the A77. I found the change-over frustrating because, not only did I have to change my handling of the camera, I also had to change my raw conversion software, and in fact ended up changing my workflow and most of my software. I have also just changed my tripod. The detail that you get from the A77 shows up deficiencies in your methods, lenses, and tripod! (I previously submitted a couple of posts on this forum highlighting my frustrations.) I haven't bought any new lenses yet, but have sort of thought about it! Fortunately my computer equipment is reasonably new and up to the job.
Having got over the hump I'm now very happy with the A77. The EVF cannot display the range luminousity that I'd like, but on the other hand in low light conditions its a joy to use when compared to the D7D's OVF (which had one of the better digital camera OVF's). I photograph only raw, so the ultimate image is not going to look exactly like an LCD in any case.
For me the most annoying aspect of the A77 is that I often accidentally move the front "thumb wheel", which is set up to adjust exposure compensation. But that is more me than the camera.
Bottom line - I've grown attached to the A77.
regards - Peter