At the end, unfortunately, but returns after some deficiencies

They were looking for a successor to the Microsoft SideWinder X8 - the bad reviews ("online compulsion") of the Razer Ouroboros required a new opinion:
Yes, you have to once a Create account to download the Synapse 2.0 software, then you can put it but in the offline mode and up to macro everything works well offline (own DPI settings, illumination, etc.)

Hereafter the battery life compared with the X8 refers to the same parameters (500Hz scanning 2000dpi) - 250dpi I found useless, with 1000dpi I noticed no significant improvement.

Good:
- Standard AA NiMH rechargeable battery (x1) can be used, the change is somewhat tricky (adjustable backrest must be removed)
- Ergonomics at Palm Grip was with me comfortable thanks to adjustable back height, pull back and interchangeable Wings OK
- The Klickfuntion of interchangeable "Wings" can be locked by lock button at the bottom, then there's no false clicks
- Slides well large Teflon surfaces
- Charging station stands firmly on the table, because nothing wobbles
- Well-programmable number of DPI and DPI stages
- I found pleasant haptics, rough matte plastic as the X8

not so great:
- The on-screen display (a type of LED overlay on the screen) at the DPI change worked in only sporadically
- Back setting with latching casts doubt on longevity and is fiddly to use (I have not touched by time adjustment)
- Turn on / off badly solved: hold five seconds both top buttons down below the scroll wheel (why ever off su?)
- Standby time be programmable, the mouse wakes but only with difficulty from their sleep again
- Large Teflon surfaces accumulate dirt on the joints to the floor

Bad:
- Battery life - without manual switching on and off the mouse was discharged with me the next day (the X8 keeps one week)
- "Phantom signals": resting on the table or even in the cradle, I found the computer overnight from standby woken before - obviously believes the mouse to have been moved. The problem has never been on the main X8.
- Account-forced (just annoying and bring me no added value - I use the mouse does not regularly attend more than 1 computer and will then necessarily assume Settings

Fatal:
Decisive for the return after a few weeks use was that when you press the left mouse button, a loud creak that did not come from the microswitch (!) - It did not work with a mouse at this price point.

At the end of the six-year-old SideWinder X8 must be retrieved from the cellar - if anyone knows or remainders an alternative to her ...