@Icemanu, here is one guys review of the monitor 60's it's pretty spot on and I can back up his statement also. For the price and bang for the buck you can't beat them just make sure you have a good sub. I picked up a pair at new egg for a little over a c-note a few months ago and never looked back.
I didn't expect these Polks to have good bass, certainly not at that price, but I was pleasantly surprised. Since Bass is harder to reproduce, it weighs heavily on my buying decision. The Monitors didn't break up in the low frequencies even on volume levels as high as +5 (we switched between Pionneer Elite and Denon receivers). The bass was not that deep, to be sure, but at the 40-100Hz frequecies, it was loud, full, and I could feel it in my chest.
The larger speakers were also loud and could even go lower, but their bass seemed more muffled and less clear. But the Monitor 60's really shined in the mid ranges. Where the other speakers sounded further away, the Monitors where very detailed and "close." The higher frequencies were also strikingly sharp, fast, and in-your-face, even at the highest volumes. I know that the bookshelf monitor models are badly reviewed online, and Tweeter didn't have these for comparison, but the Monitor 60 towers were very alive to my ears. Maybe the addition of the woofer and the tower cabinet makes all the difference, I'm not sure, but I cannot think of any speaker at that price-point that can compare (they were on sale: $175/50% off, so maybe at $350, it's not that good). Anyhow, I bought them that day. I am now comparing all my other speakers to them, in my listening room. Some would say that these speakers are a bit too forward and even metallic sounding, and I can see why. But The clarity of these speakers is astounding. They are definitely not laid back. Compared with a pair of Infinity Primus towers that I am borrowing and that are about the same price, they are more lively and forward, so if you're looking for laid-back, these are not your speakers. When I got them home, I compared them to my Klipsch RB5's. These are horn-loaded bookshelf speakers that have been my reference speakers for years.
The Klipsch's are more spacial and I can better make out where instruments are in a complex symphonic passage, but the Polk's do not dissapoint. Although they are not as deeply spacial, the sound is closer to the listeing position. Although they are not up to par with the Klipsch's, they certainly hold their own. I also compared them with a pair of Polk RT600i towers with the foot-vented port. I felt that this was a fairer comparison since these were the low-end standard 3-4 years ago, albeit at a slightly higher price-point. These have always had excellent bass and are a joy to listen to, especially with classical music. However, the Polk Monitors where much more detailed in the high frequencies. While the RT600i's do go a tad lower, they will break up in the lower Hz at higher volumes if not coupled with a good sub.
The monitors could go much louder w/o a sub and where a much better speaker overall. I still love the quality construction of the RT600i's while the Monitors look rather cheap with their plastic silver fronts, but they were a better speaker, performance-wise. I have not thrown everything at them yet. For example, I have not used them in a home-theater setup. They certainly sound like they are geared towards this, though, since they are crisp, clear and loud, but I haven't tried this out. Overall, an excellent value. Polk has not advertised these well, there are very few reviews and I have only seen them at Tweeter. I heard they were designed exclusively for resale through Circuit City stores. This is probably not a good outlook for them. That said, if these can be scooped up for less than the MSRP, it should be a steal. Coupled with a low-Hz capable sub, they should be an incredible value. I am rating these a 4/5 because of the construction and the $350 price tag, but the performance is top-notch.
Loud, crisp, in-your-face speakers. Better that similar speakers from Sony, Pioneer, and the rest of the low-priced stuff out there. In my view, they bested speakers 2-3 times their price as well.