Henrik, have you eyed the new 3 speed Metabo that replaces the BS/SB 18 LTX BL and BS/SB 18 LTX BL QUICK?
I believe it is the BS/SB 18 LTX-3 BL and BS/SB 18 LTX-3 BL QUICK.
My local Metabo dealer finally got some new/newish Metabo stuff in (actually, they got in new angle grinders, last year...the
first new Metabo stuff there in years...not the fault of the store..) and now I get it. Their new cordless range of the last few years seems leagues ahead of their prior power tools. The only drill there similar to yours was the tapping drill that came out last winter.
It was really nice. And it totally made that electronic whine noise that you referred to as a constant beep. [big grin]
I did finally buy a FEIN ASCM last week! the 18, not the 12. [big grin]
It wasn't for me. I was about to put the A18 (with an additional purchase of a 110V charger and compact batteries)
on my next drill to try list; but I found out about the 3 speed Metabo and...well... 3,800 rpms.
All that said; the PDC and T18 still do everything I need. :0