Hmmm.. I would disagree that generation 4 is under appreciated. If I recall correctly, UU at that time was extremely popular. However I could understand it receiving flak due to it being and upgrade generation. (Many new / pre evolutions).
I enjoyed soulsilver greatly. I thought it was excellent. Apart from the battle animations, you really could guess that black and white came before HGSS. I was dissapointed with BW somewhat.
I have claimed Alduin, the mighty dragon! He shall one day return to bring forth the end of time, and fulfill the prophecy of the world eater.