My first post so be gentle.
I have been listening to my Logitech S715 IPOD dock for sometime. It has rave reviews in its price category and though sounds good, the bass is not strong until the volume is up a bit.
I have listened to the Bose Sounddock Portables that belonged to colleagues of mine at work. I have it side by side with the S715 and the sound of the Bose is much more preferable with bass at low volume much better.
FYI, I enjoy my Audio-Technica M50, and also have a XBA3 for portable use.
PS slightly cheaper recently here http://www.ozbargain.com.au/node/105662
Also cheaper prices by a bit on Staticice but I have bought from VideoPro before and found them trustworthy.