Been gone awhile

Been gone awhile and I need to catch up on the latest BR technology.
Two quick questions-What is now the most powerful BR that can fit in and axis tube for burning using a flex drive setup and can I get it already asssembled.
Thanks

12x BR diodes are most popular, it seems, they'll push around half-watt or maybe bit more.

You have a very nice shop linked in my sggy, Cajun lasers, see what they got.

There is now a better performing 3.8mm 405nm single-mode diode out there, but it´s still very hard to find them (lazeerer has a very few stock of them)

http://laserpointerforums.com/f48/1w-polished-405nm-3-8mm-diode-lazeerer-81725.html#post1173922

http://laserpointerforums.com/f63/405nm-pocket-burner-lazeerer-angelos-did-again-81217.html

Test #3 405nm 3.8mm Hitting almost 1.1W - YouTube