Need more power

Hey guys I'm lookin to get a new amp for some passive speakers I have and want some advice.

Current Set up:
2x Peavey PV115 - 8ohms 400Program/800Peak
1x Peavey PV118 - 8ohms 400Program/800Peak
2x Crown XLS202 - 200W Stereo/ 600W Mono

I originally got the two Crown amps to run mono for the PV115s where I would have enough power to get good volume but couldnt hurt them with the Crown amps blastin.
Then I got the sub and have been runing that with one amp and another running the PV115s in stereo.

And now i need MORE POWER... should i go with another xls202(around $175 used), crown xls1000(215Wstereo/700Wmono $299), or crown xls1500(300Wstereo/1050Wmono $399)

i guess u could say im partial to crown amps cuz they run like champs, but im open to other suggestions

no opinions from anyone?