Try 3415’s they are more supple than 3416 and still black. The main thing in keeping hands warm is having enough room for a good under glove insulator and air circulation.
Be forewarned that the 3415 is very thin and scored a "0" on the EN388 cut scale, which is 0-5.
The 3416 scored a "5." Yes they're thicker, but the highest-rated dryglove I know of for cut protection. See this for a demonstration. Keep in mind as you watch this that I dive sealless... I have no wrist seals at all and rely 100% on my gloves to seal against water entry into my suit. That's how tough these gloves are and how much confidence I have in them:
The 720 scored a "1" - the same as the 660, which is the classic PVC "smurf" glove.
The 490 and 495 both scored a "2," but like the 660, are old-school PVC gloves. They tend to lack dexterity and stretch as well as native thermal insulation. They can both be thought of as 660s with liners to help make up for the lack of thermal insulative properties of PVC... Which explains their slightly higher cut resistance - the liners added one level. Of course, that's a little bit "smoke and mirrors" for us, since a cut in the glove itself will create a leak - the additional cut protection from the liner won't prevent that. They really can be thought of as a "1" in cut protection.
Most divers I know prefer a nitrile glove (720) either with or without a liner. They tend to be thinner, stretchier, more dexterous, and warmer (nitrile is a better thermal insulator) than PVC gloves (660 (smurf), 660ESD (black), 620 (orange DUI), 490 (smurf), 495 (smurf)). This comes as no surprise, since nitrile is a newer material than PVC and was designed to make PVC and latex both obsolete.
My advice? 720. Add a liner or even a thicker liner if you need the additional warmth. Opt for the 3416 if you need something tougher - but you'll lose some tactile feel, as they're thicker and "gummier."
Steer clear of the PVC gloves. They're outdated. You can get the same level of toughness and more warmth in a thinner, more tactile glove like the 720.
720s also load on rings a LOT easier.
All of the above information can be found in chart format at
www.deepsouthdivers.org/gloves.jpg. The 3415 is not on there because the chart only includes gloves that have enough cut and abrasion resistance to trust as drygloves... And with a cut resistance of "0," I definitely do not trust them.