I was looking for something new, because Logitech unfortunately for a long time no longer produces quality (as MX518 etc.). Of course it should not be too expensive, so please MM (I'm not stupid) and times the range checked. There you can at least handle some mice and quite a few Exclude. The V900 was set down, therefore could not go wrong. If you are Logi mice accustomed, you have to get used something because the Rapoo rather flat comes (at least not so ne bump as usual). However, this will pass rather quickly. Squeaky wheel would I had not noticed until now, does not have to be the case for everyone. Otherwise, a solid build with fabric-sheathed cable.
A star deduction is that the V900 does not get along with my Razer Goliathus Control Maouspad. Apparently the gridded surface for problems, makes the sensor. The falls on especially in sideways motion. On a coated mouse pad, it does not seem to be the problem.