Well now we have so many new players in the market it get's difficult to decide which one to go for depending on getting the bang for your buck.
But till now the most common player is the WDTV in the forum thanks to Ram and others. Few people do have an elektron too.
Also lot of new players have not been tested in the market and are just recently launched products which makes the task of buying them more difficult
Yes this market segment is evolving and we will see lot of action around this in couple years. I wont be surprised if HDTV & DVDP manufacturers integrate these chips in their products. They already support DIVX.