Ultimateaddons Essential Heated Grips

Only fitted a few days ago but the the grips seem pretty decent.

Pro's
Neat controller gives a much cleaner, less cluttered look to the bars.
One simple big button to operate.
Straightforward install. Although the electronics sense a volt drop and turn them off, I used a relay to eliminate the possibility of any parasitic draw from the battery. Bosch 30 amp relay from Amazon for less than a fiver, attached with velcro near the battery keeps everything neat and rattle free.
The cable lengths were good for my bike, enabling the connections to be located in a good position without have to shorten and hide lots of excess cable.
Good price for the spec.

Cons
Wiring Instructions are a bit vague.
They don't get as hot as my previous Oxford grips but I never used to use the Oxford Grips on maximum anyway. From the short rides I've had so far they seem more than adequate.
The connectors a bulkier that fitted to some Oxford grips and not waterproof but most connectors on bikes aren't anyway.

I can't comment on the reliability due to only fitting them last week but they seem decent quality and look good.

I love these. Really easy to install and very good instructions. I bought these as a back up if the weather was really cold but I end up with them on a lot more than expected for an extra level of comfort I didn’t know I wanted or was possible. Very neat little controller too, compared to the giant Oxford box. Totally recommend.