I have converted all AEG's but the KA FAL to deans and all batteries but a couple Madbull 12.8V LIFE batteries that are still mini's since they feed the FAL.
It's now the first thing that I do when I get a new AEG. My only beef is that the newer batch of Modify deans connectors don't always mate properly with the older ones. They are extremely snug and sometimes don't want to seat. Once connected though, they work fine.