I have had XM for over a year and like it for the most part. I love MLB Home Plate (channel 175) and listen to it pretty much every day. The shows are generally very good, with knowledgeable hosts, and they actually talk about all 30 teams (for the most part). "Baseball Beat" with Charlie Steiner and "The Show" with Rob Dibble and Kevin Kennedy are my favorites. You can listen to every game as well. I know for a fact you can listen to MLB 175 online, but I'm sure you can't listen to the games online. The music channels are something of a mixed bag...I have my favorites, but if you listen long enough, you seem to get some repetition. It's kind of like one week they'll favor certain artists, and the next they'll favor another set of artists. Also, the sound quality of many of the music channels is border line junk...like listening to low quality mp3s. I can only take so much of the swishy drum cymbals and lack of bass before I have to change the channel back to a talk station, quite often. That's my biggest criticism: the low quality of the sound, which they seem bent on NOT fixing, unfortunately. As far as investing in equipment...some of the basic receivers and set ups are pretty cheap (under 50 bucks easily) so even if the merger somehow affects your equipment in the future, it's not like you'll have sunk tons of dough into it. I'm pretty sure XM and Sirius have both claimed it won't, though. I have a nice little Aiwa (I think) unit that can be moved from the car to my home office pretty easily. It's about the size of a pocket calculator, which is pretty cool. You have to buy and extra "cradle" and antenna for each location you want to use it in, though.