Just for be equal
+1 PressPrime is sound better for me.
WPWave, Imagine the cool Wave logo you could use.
If you are targeting on WP related items then WPWave is a smarter choice.
If you have already bought the domain then definitely wpwave.com since its already getting traffic:http://www.alexa.com/siteinfo/http%3A%2F%2Fwpwave.com#trafficstats