Based on customer feedback found across the internet, from actual users of this product, we have given this product the following rating: 
Shimano Castaic Review
Easily palmable reel is as good as it gets for flipping and pitching. Dualthumb bars let you open and re-engage the spool clutch without touchingthe handle. Exclusive High Efficiency Gearing for raw, smooth power at alltimes. Super Stopper anti-reverse with Assist Stopper backup, aluminumframe with easy-access side-plate, and VBS centrifugal brake. 4+1 Bearings.
Shimano Castaic Reviews
Actual Customer Feedback:
"I teamed this reel up with a Shimano Crucial CRC76H....what a great flippin' and pitchin' rig. The dual thumb bar is the ticket!"
Portion of actual user review from basspro.com
"I have used all brands of reels, shimano stands out. It took me a little while to get used to the new flipping trigger, from the older stile bar. Now I love it and I use this reel for buzz baits and frogs also for quicker activation of the reel."
Portion of actual user review from basspro.com
"This seems to be the best reel I have found to Flip jigs into heavy cover. I can make a long distance then let the bait free fall. Engaging the reel once you have a strike is made easy with the thumb bar."
Portion of actual user review from basspro.com
"This is a excellent reel. Although i think that the older ones with the full thumb bar are easier to use. It is much easier to engage the thumb bar on the older models."
Portion of actual user review from basspro.com
Our research on the Shimano Castaic Baitcasting Reels Suggests:
According to the general online consensus, where our research is based on unbiased customer comments and user feedback, this is an excellent reel and excellent value for the money. There were only a few negative comments about this reel.