I believe the BE debuted in 2010. Before that was the Marsha (see above).
I have owned them all: a 2009 Marsha, a 2015 BE-100 (no updates), and a 2019 BE 100 Deluxe.
The 100 Deluxe is the best one. It can sound like any of the others, and frankly, like any of Dave’s other amps too.
The 2015 BE 100 was my least favorite. Less gain, more choked. Just wasn’t for me.
The Marsha was great. Darker and more gain than the 2015. More compressed. Great amp. Was just superfluous with the Deluxe. Deluxe can do Marsha tones plus a zillion others. It’s a tweaker’s dream amp.