Hi,
I don't have experience with those exact speakers, but a few years ago bought
a pair of Advent Calypso speakers at Costco to replace the crummy speakers
that came along with an Aiwa stereo system I was using mostly to record
things off the radio. Later, I tried them out with other audio gear, and they
actually amazed me! They really sounded great with a Sonic Impact amp, and
I would use that as a portable system for outdoor/camping, etc., and ended up
giving them to my syster to use in her living room. I've since picked up another
pair on e-bay for about $45, they are an outstanding value. Have fun with
those, and hang on to them...you'll probably find plenty of use for them in the
future even as you move up to 'better' speakers.