I liked Red Alert 2 vanilla, without Yuri's Revenge, then came the expansion pack, then I eventually stopped playing it. When I do re-install it I usually don't bother installing Yuri's Revenge, but vanilla RA2 is very good, and well balanced. The original Red Alert was better mostly because it was supported for years, it got a good number of expansion packs, extra missions, units, etc., and was also ported to various platforms, to this day I still remember the legendary Red Alert: Retaliation on the original PlayStation, and it was amazing.