My vote (as though it counts)...
...is also for the Pioneer...however, as I recall the only fly-in-the-ointment is that it does not have a "pre-out" so it can't be used as a pre-amp with an outboard power amp should the need for more power arise; but, then again, neither does the pricier Marantz PM-7200...pity about that...both units would be ideal pieces to build on if they did. Obviously, that may not have any bearing in this case.
TEAC has a really, really nice little unit(integrated) with good specs(but no "pre-out") but it's MSRP is a bit higher than your budget...although you can certainly find it cheaper on-line...you might want to visit the TEAC site for more info and other models...particularly if you are tired(as am I) of the same ol' same ol' black plastic boxes...
FWIW, the Onkyo MC-35TECH, is a good mini-system with a three-disc changer, a reciever with about 20Wpc@6 Ohms and two decent ported loudspeakers...you might get a good deal as an Onkyo re-pack and just use the electronics and ditch the included speakers or use them as remote extensions with an outboard selector switch...With an 8 Ohm speaker the Wpc drops to 15...still more than sufficient...I own one of these systems and even for the 400 clams it cost as a new item, it's performance is remarkable IMHO...good bang for the buck. Heck, you might even like the speakers more than what you have...
jimHJJ(...just my two cents...)