So, in my quest for choosing some new sanders I am wondering what/why is the reason for ETS EC 150/5 I understand its a little more compact and cheaper than the RO150 but essentially it seems like the same sander just without the added benefit of the Rotex mode. It would stand to reason that anyone that has over 500 to drop on a new sander could afford the extra 100 for the Rotex. It would also stand to reason that anyone that is in the market for a 5mm sander might need or want the Rotex feature. I dont do much heavy sanding typically so Im eyeing the ETC EC 150/3 for a 6" sander but curious if anyone has owned a RO150 and felt the need for the ETS150/5