Looking for a new mouse here, but unsure what to go with.

Was a massive fan of the MX500 series, and when they came out with the second version of the G400 (without pixel snapping) I jumped over to that and have been using it since.

My G400's condition is alright, but I need a better mouse at work so that's why I'm looking. Logitech don't seem to be making them any more, but for £35 or so online I do have the option to just go with the same - would just be a little worried that I'd not get the second version.

I'm mega out of the loop, are there any other options I should be considering? Price point, shape and accurate sensor are why I loved these mice. Definitely don't want some MMO gloop with LEDs all over the place and more buttons than the ISS.