Two votes really, take your pick.
My personal "best buy" of the last 10 years is my Jet JPT310 P/T. It's probably the single most used piece of equipment in the workshop, other than the dust extractors. I know budget P/Ts have been around for a long while, but the re-thinking of some fundamental design aspects, along with the tank like build quality it offers at very respectable price point put it in a class of it's own.
I think the single biggest advance for home woodworkers though has to be the radical increase in availability of decent budget priced tablesaws. When I bought my Scheppach 2500 about 10 years ago there was very little choice. There was the Scheppach which came in around £1500 with all the bells and whistles, it's little brother for a bit less and a couple of models from Kity, if you could find one. Apart from those, and the occasional galvanised steel topped contractors saw that was about it, there was an almost complete dearth of mid range tablesaws with induction motors and any decent level of accuracy. The introduction of machines with features like cast iron tops and sliding tables for around £750 has transformed the capabilities of any number of shed dwelling woodworkers.
