EOS 5 had three metering systems: spot, matrix and average. it also has an eye controlled focusing system: you look at one of the several red rectangles that you could see through the finder and the camera will focus to whatever is in that rectangle. And also a way to set the aperture for a desired DoF, also looking at two of these rectangles.
I think EOS 50 also had spot metering and was slightly smaller than EOS 5.
Spot metering on EOS bodies are "reference spots"; a scene should not really be taken as metered correctly by a single spot reading unless you have the skill to seek out an area between bright and dark, or compare both areas with the spot (one at a time, taking note of the exposure scale on the right of the viewfinder for the graphical representation of differences) and then use manual. The EOS 5 had Partial, CWA and Evaluative and a very rudimentary spot function. Its metering system was descended from the EOS 1 but lacked the further matrice refinement that came with the EOS1N.
The difficulty with the early spot metering facility in the EOS bodies is that they remain fixed in the central zone of the viewfinder, with the exception of the EOS 1N having two selectable variations of spot in terms of size, but still transfixed within the central viewfinder area. In my case I have found that Partial metering can work much better than spot and it is not fixed to the central viewfinder area. Later EOS bodies improved on the geography of spot and partial, including the EOS 50. None of the cameras are particulary light (but they are still comfortable if you taken off the power drive booster E1 for example).