To tune or not

[mults]

I have some time during the winter storage months to determine whether or not to get a tune in the spring (Uprev or Ecutek) with the mods that I currently have:

• Berk HFC and CBE
• R2C CAI

I am not too concerned what brand of tune I may use (although there is a Uprev tuner close by), but whether or not I will see any benefits in HP gains or drive-ability. As of now, the car runs great and the A/F ratios seem to be where they need to be (using the Torque Pro app), and the MPG is terrific (~ 30MPG on the freeway).

So, my questions to those who have tuned:

1) Would you do it again?
2) Are the HP/drive-ability improvements worth the $600 charge?

I hate to mess up what I have just to get a few HP. I appreciate any insight to those in the know...