I am 2 handed rev dominant player. I was looking for something that is more predictable and smooth. Should I go for a urethane ball or a weak reactive ball that does not have much action. Also feel free to drop in the ball options I could look at. Speed : 16-17mph. Revs: 300-400rpm. Thank you.

Left handed players tend to do better with urethane only option as see less transition and dont need to get as deep which reactives are better for.  That said unless throw it like Jesper or Buttruff go reactive.

It's hard to answer for any once person specifically.
This is the way I look at it as  a rev dominant, no thumber
rev rate at 380 and about 3 or 4 degrees axis tilt.

On a easy house shot, a weak reactive may allow me to get deep inside and use the house shot advantage.

I can not use any reactive on house shot except the weakest ones.

With the  Fever Pitch or Covert Tank, I can do the same, and have a ball I can control, use on sport shot. I have weaker urethane and widow spare for very light oil

Since going no thumb for a long time I felt I needed to learn how to use reactive. And now got to point where I can, but before the latest urethane's there was no middle option. I love those 2 balls and want to try the Badger Infused when it comes out.

But if you're on a house shot and just want to stand left and let the house shot do the work - then reactive is fine.

On many conditions urethane is very likely to get locked out through carry down.  This is true no matter how high your rev rate.  You can see this happen to pros on tv regularly

Reactive. Any day.  If you want to tame it down, lay it out with pin 2" from PAP and it will stabilize reaction.  A ball with lower differential core AND a layout as suggested will give you control of urethane but carry of reactive.

There must be a small window where urethane can help, but in my mind it's very small, and trade off for the average bowler (not named Jesper Svendsen) is not worth it.  Give me a Rhino with a 2" pin layout.  Urethane is way overused on typical house shots and many end up being expensive door stops.

On most house shots I can line up with my after dark solid very close to where I would play with urethane, and get vastly superior carry.  I am not against urethane.   I have carried urethane in my bag since the first natural came out, and have had great success with urethane , but in very limited circumstances. 

The environment that allowed resin to replace  urethane almost overnight is still prevalent.   

I have had great luck with a couple of vibes, cobalt and new blue.   Vibes are similar strength to my After Dark, but a little earlier, and smoother.