Your absolutely right...

I totally forgot, but Macrumors has a nifty buyersguide... http://buyersguide.macrumors.com/ Which makes it easy to decide when to purchase...

I will wait for Leopard then. Just found this on Mac rumors:

According to multiple anonymous sources, Apple's next installment of Mac OS X (named Leopard) will arrive in mid to late April with an exact shipping date being announced later this month, perhaps alongside Adobe's Creative Suite 3 event.

While the sources are anonymous and cannot be confirmed at this time by other known and traditionally reliable means, agreement from such a variety of sources is rare. Still, Leopard's release has been prone to much hype and speculation, and we hesitate to place too much hope in such rumors (yet).