My former vermin (Logitech M555b) has squeaked its last I'm afraid.
I'm currently using a very worn Logitech NX80 which was kind of a precursor to the M555b:
I'm looking for a suitable replacement please in the <= £45 bracket?
I'm after something symmetrical, wireless (propriety or Bluetooth), decent build quality, preferably with a middle mouse button and not too large (as I have quite stubby fingers). The NX80 (above) is very prone to signal issues as it's an early 2.4Ghz design, no Unify etc. so it's not something I plan to keep using longer than I have to.
I've tried a Logitech M557 (successor to the M555b) but found it to be far to light and shares too many similar design characteristics (and likely flaws too).
Advice is much appreciated.