First rule of audiophile, keep everything you currently have until you are positive about the change after extended listening to the new stuff. I believe either way, you will like the Cambridge or the Rega better. I'm not a big fan of class d amps. Guessing you are listening in a smaller space.
Rule 2, you can't hear a review. Things sound different with different equipment. You have your specific space and your specific equipment, that is unique to you. You simply have to see what your audition options are. For example, you have a 60 day return policy with Cambridge. That said, is there a store in town that will work with you? Or better yet, someone close by that can bring in their equipment to sample with what you are wanting to keep. You want to listen to things in your space, if possible. Otherwise, your equipment isn't huge (giant tower speakers and such), see if a stereo store will allow you to hook up to their various amps on display at their store location. You're spending some serious money, would you buy a car without a test drive?
For example, I used to have some B&W's similar to yours. I liked them very much hooked up to a Dynaco ST-70. I gave to my son and gave him a choice between a ATI or the Dynaco and he chose the ATI amp. Totally different sound for each. Which was better, well that is open to interpretation. To me, I loved the warmth and gentle reach around tush grab of the Dynaco. My son loved the brightness and drive of the higher wattage that the ATI afforded.
I believe you are going to love that turntable.
Rule 2, you can't hear a review. Things sound different with different equipment. You have your specific space and your specific equipment, that is unique to you. You simply have to see what your audition options are. For example, you have a 60 day return policy with Cambridge. That said, is there a store in town that will work with you? Or better yet, someone close by that can bring in their equipment to sample with what you are wanting to keep. You want to listen to things in your space, if possible. Otherwise, your equipment isn't huge (giant tower speakers and such), see if a stereo store will allow you to hook up to their various amps on display at their store location. You're spending some serious money, would you buy a car without a test drive?
For example, I used to have some B&W's similar to yours. I liked them very much hooked up to a Dynaco ST-70. I gave to my son and gave him a choice between a ATI or the Dynaco and he chose the ATI amp. Totally different sound for each. Which was better, well that is open to interpretation. To me, I loved the warmth and gentle reach around tush grab of the Dynaco. My son loved the brightness and drive of the higher wattage that the ATI afforded.
I believe you are going to love that turntable.