have not tried the Arbe hand piece but use the #30 Foredom for all
round work, but I use the quick change Flexi - HP Foredom H.20SJ for
cutting seats for stones.
It is lighter and easier to hold, seems more accurate.
Those prices are great the #30 is $140 in Australia including tax.
The Flexi - HP Foredom H.20SJ is $203.
That’s what you get living downunder.