Garand was a good design, but I am loathe to describe it a great design. It was a little on the heavy side, not quite as resistant to mud and dust as it should be, and slightly less accurate than the springfield, or even the lee Enfield.
The success of the garand owes more to the soundness of US small arms procurement policy than to the outstanding nature of its design. Credit must be given to the fact that it was the first self loader to be adopted enmasse by any army in the world, but this is hardly reason to place it in the upper echelons of the "best of the best"
Its also interesting to look at the M-16. During the Vietnam war, the Australian forces used as their standard side arm the FN FAL, or SLR as we called it. There was some use of the M-16 as well, but it was not generally liked by the Australians, because it was thought to lack killing power (something I dont agree with). There were three versions of SLR, but as rifles thre were really only two, the L1A1 20 round version, and the L2A1 30 round version. The 30 round versions were known to be slightly more prone to jams.
The SLR was seldom used in an automatic capacity (as built it does not have such ability, but mods can be made in the field to make it automatic. The Australians adopted a much more conservative approach to jungle warfare than the American, who had a reputation to blunder about the place, with their automatic weapons making one hell of a racket. My opinion is that the Australians were more successful in the jungle than their American cousins, brought about in part by the weaponry they were carting about the place. So, in my opinion, FAL rates as a better weapon than the M-16, at least in some circumstances