The value pick of the bunch here is the G403 Hero (updated sensor), but it is a large, very specifically shaped mouse that is obviously not ambidextrous. There's a trend now towards smaller mice, so those with specific wants or very large hands: rejoice.
The G203 is the same as the G102, but the latter can go for $20-$25 when on sale on eBay. The Razer Viper Mini may be the better pick in this product class, but here is this deal for you to weight it up against, I guess?
The G Pro wired is a good competitor against the Razer Viper, but if you can wait for a Viper sale or can spend the extra $10, get the Viper.
For everyone who already has a 1000Hz polling mouse with a decent sensor and it isn't falling to bits, wait for 8000Hz wired mice as they will become more important as you reach higher and higher resolutions and refresh/frame rates (particularly over 4K and 240Hz).
Enjoy!
god dammit, got me excited when i saw G Pro..