Here is my input. It is based upon ten years or so of trail, error, and experimentation. I started as a point-and-shoot user, and quickly became an SLR user (and now am an SLR enthusiast). I began with Pentax K-mount gear, and have since tried/used/owned Minolta, Canon, and Nikon, pretty much in that order. All offer excellent systems. I chose my current stable of cameras based upon the manner in which I use a 35mm SLR camera. I have two Canon F-1Ns, two Nikon FEs, and a Nikon F3HP on the way. While some folks make their decisions based almost exclusively on lenses, I tend to identify other aspects and features as well. For example, I really like the viewfinders in the cameras I currently own. They are uncluttered and unobtrusive. They do not assualt me with information, and they provide good magnification, coverage, and brightness. Basically, I like to see "the whole picture," and these viewfinders permit me to do so.
I also do not like what I would call a "lightweight" camera. A number of folks here prize certain camera bodies because they are small and light. I am the opposite. I have found that a few extra ounces offer me better balance and handling (and with a motor or winder, a lower center-of-gravity). All of my cameras have either a motor or winder attached. All are "heavyweights."
I have also found that heavy, all-metal cameras offer superior ruggedness and durability. Further, I am one who does not mind admitting that I like old cameras, and old craftsmanship. Plastic cameras have never impressed me. Hence, I am an advocate of the "classic," well-made body and lens. With regard to the Nikon FE, I purposely chose that body because it is a virtually all-metal body that will accept just about every Nikon lens from 1959 and beyond. Thus, I could buy superbly built, all-metal lenses that offer great optics for next to nothing (i.e. Nikon pre-AI lenses). If you would like to own a variety of lenses--and not have to end up in the poor house--I would suggest taking these factors into consideration. I wish you well, and am sure you will receive plenty of good advice.
PS: I have not mentioned my thoughts in regard to the autofocus vs. manual focus debate. After trying AF, I went back to MF a few years ago. I prefer having the control of MF, especially in terms of depth-of-field. I also like the comparatively dirt-cheap prices of MF lenses. Further, the build quality of a $10 MF lens will rival that of any modern (plastic) AF lens.