Nitrous cam exhaust lobe profiles

Who on here can tell me about choosing nitrous ex lobes ?
Here's the deal , I'm looking at exhaust lobes
One lobe  is 333 on the seat 297@.050 and 208 @ .200 lift
The other is 332 on the seat 298@.050 and 214 @ .200 lift
Is the slower ramp lobe better for nitrous or the faster ramp
Better for nitrous , some one told me the faster ramp lobe will get it
Out quicker and someone else said that the slower lobe will keep the valve open longer

What cyl. head & engine size?

562 4.300 stroke 4.560 bore trick flow 325 cnc head

This was the choice for a 275-300 shot
Intake 316 on the seat 284 @ .050 and 205 @.200 .824 lift
Exhaust 333 on the seat  297 @.050 and 208@ .200.792 lift
Or 332 on the seat 298@.050 and 214 @.200 .792 lift

Had to make a choice it's going to be
316 on the seat 284@.050 205@.200 .824 lift
332on the seat 298@.050 214@.200 .792 lift
On 114 lobe sep