Hi, I got your point, when I started with cordless tools I had just two dewalt batteries and bought an adapter to use makita tools.
then I found some deals on kit and started my makita 18vbattery and tools collection.
I actually do not really need new tools except(the real one I need is out of any human possibilities) the 4wheels propelled barrow from Makita (around 5kEuro!!).
I was tempted from xgt because of their super power output, I can feel it on the blower powered by backpack, extraordinary..
but the rest of tools need a battery to be cordless and the big ones that allow to drain such power. But thinking Definitely not worth for me.
I never tried any Bosch Fein or metabo cordless, probably because my father was a makita and Dewalt cord user.
The alliance for the batteries would be great also for environmental reason..
good night and good job!
ps I am very happy of the makita biscuit joiner, the Lamello should be even better and with more options, congratulation!