What stand mount monitors works w/ Pass XA 30.5?

I have a Pass XA 30.5 and I'm looking or a great stand mount speaker with reasonable efficiency to match up with my 30 watt Pass. I'm doing this backwards, buying the amp first but I like the Pass sound and I have a smallish room and pair of 26" Sound Anchor stands,hence my need for a monitor. I'm trying to stay under 4k for the speakers new or used. Any help would be appreciated.

I paired the Pass 30.5 with the Reference 3a decapo be's and I found it to be a very good match. I have also heard the Pass 30.5's with the Silverline Sr17 supremes and it was heaven. 

Have fun