Very true, and I certainly wish Microsoft would have employed some of that "let's do the implausible" in their latest MS Office '08 product. Sadly, they like so many software developers now days assume users have the latest CPUs installed, contributing to a never ending stream of bloatware. While some may defend these bloatshops by crying "software portability," the fact still remains that the days of true software programming wizardry are now gone. The original Mac team (and Lisa team too) were a gang of amazing engineers.
I suppose I shall cast another vote, this time for the Mac Classic. I really like the industrial design of that model over any other compact Mac, and I absolutely love the fact it has System 6 in ROM -- what fun! They are also widely available on EBAY for very low prices. But alas, it's no SE/30 (mainly why EBAY prices are so low). But if you don't care about speed or upgradability, it's a fun Mac to use.