Two suggestions for non-heated these are excellent.
Waterproof, warm and flexible, they use Gortex and Thinsulate, plus the price is right. I wear these until it gets really nipply.
If you have the funds, heated gloves, with a heatroller (thermostat) and heated jacket liner are the only way to go.
There are many good ones out there; www.gerbing.com
are brands I've used.
Once you have tried them, you'll wonder why you waited so long.
They last for years, my Gerbings are over 15 years old and still work, but gloves literally wore out, not the electrics (guaranteed for life), leather started to break up.
If you go the heated route, make sure you get the heatroller, and on/off switch won't cut it. I run mine on the coldest days (around freezing) around 60-70% power. If you are worried about spending a lot on heated gear-amortize it over 15 years or so and it won't seem so expensive-plus it will increase your riding season to year round, well it does in WA state, but wouldn't in Alberta Ca.
Having tried heated gloves-jacket and heated grips, heated gear is a much better way to go, if you can afford it.