My old faithful KSM5 (5-quart bowl-lift) still looks like new and works beautifully. It was the top of the line in its day. I have promised my niece (the bride-to-be) a Kitchenaid and she is thrilled. But which one to get? I am tempted by the newer 7-quart. Do any of you have experience with it? Thoughts on the 7-quart versus the 6-quart? As she is likely to have it for years, my feeling is get the best one currently available.