Little two-way boxes on a stand....

Add a sub and they sound just as big as a floor stander.

This is pretty much what I have found. 

I have some incredible DIY (with close to state of the art drivers and x-over), sitting on a woofer module, and they sound as big as any 3 way floor standing speaker. 

Now mind you, the woofer module is NOT a subwoofer, it is a true woofer. The 2-ways are being crossed over at 200 hz, and the 10" woofer module takes over from there. 

Thank you to all that responded. 

I’m starting to sound like a broken record but I listened to the persona b weekend before last and now I’m thinking of replacing my beethovens with them. 

Something to consider with small 2 ways on stands. 
-Not all two way monitors are the same. Some are amazing, many are just OK, and some are pretty bad.
-Without bass reinforcement from a PAIR of subwoofers they are not going to surpass the sound of good floorstanders. 

Disclaimer: I design and build state of the art monitors with powered subwoofers for red carpet clients.

If your only tool is a hammer, everything is a nail, right? 

I've tried probably a half dozen speakers, including some small monitors and larger speakers up to Klipsch Heresy in my small computer room and none of it sounded great. 

I picked up some Harbeth P3ESRs and that's when the magic happened.  I have a small sub in there and it's the perfect setup for that room. 

Would they be as good in my main system?  Even though it has better components, probably not, the room is just too big.  I haven't tried it yet, but it would be a fun experiment.