Look at DJV's build 2.055 valve and 620hp, Brian 2.08/620hp, Bryce 2.08/630hp.

Still think you need a 2.10 valve?

All have a little different twist to them, but get good power. Would a 2.10 valve be better, I personally doubt it for the level they were going after. Sometimes bigger is not always better as issues arise up stream from the valve that can't effectively be overcome.

Eddy's can take a 2.02-2.08 valve. Most of the aftermarket alum replacement style heads start with a 2.02. It's an OEM factory sizing.

Just food for thought.

It's ultimately up to you and how you spend your money. Like I say, NOBODY will spend your money faster than OTHER people!

My suggestion, pick an HP goal and build to the goal. Max theory sizing is not always necessary and not worth time, money, effort when an easier, less expensive solution is available and proven to work for your goal.

Pick your parts, pay your money.