Kitchen speakers
Raz,
Any speaker should hold up fine in the kitchen. It would be overkill, but you could get an outdoor type speaker which is resistant to moisture, humidity, etc.
If you like your Axioms, pick up a pair of their M2 or M3 bookshelf speakers. The Onix X-LS speakers from AV123.com would also be a good option.
For something less obtrusive, inceiling speakers work well for background music in the kitchen or other rooms, however, they will not perform as well as comparably priced bookshelf speakers.
Also, consider upgrading your axiom center to the VP150.