As you have owned an AG you will probably be able to dismiss comments about coloration.
The Uno is challenged in the area where the sub meets the mid horn, but the further you go up the AG range the more that is fixed. The subs cut off is much lower.
I have no idea what size room the person who reckons his soundlabs are as dynamic has? Maybe if used as headphones! When compared to an AG horn in the 105- 110 db/watt sensitivity, a planar just cannot do that kind of impact and poise.
Some people have no idea what kind of freedom and dynamic range we are discussing here. It is not until you have lived with a high sensitivity speaker like the AGs, as you have, that you realize how flat and compressed the planars and nearly all other speaker systems are. This not to say speakers like the soundlabs are not dynamic, just not as dynamic.
Go listen, they will sound distant and not as clear as your AG. At worst they will sound congested with limp bass next to an AG. The bass will be deep bass, but without the feeling of weight or 3 dimensional depth. Plus your choice of amp with an AG is a whole other joy as I have found. All those huge amps to drive insensitive speakers impact greatly on the sound too.