It's quite easy to implement rpc communication between services with CXF. Apache CXF also provides you plugins for circuit breaker (like hystrix), service discovery, retry polices etc. So you can built that type of client/server which you want. CXF also have support of spring bean container for the server side.
What do you dislike?
Official plugins support particular set of technologies. Some cutting edge framework have community plugins.
Recommendations to others considering the product
Try Apache CXF if you really need highly customisable jax-rs (or soap) server and client.
What business problems are you solving with the product? What benefits have you realized?
It simple to create common factory of client (with a prepared set of plugins) and share it between you services so you can manage changes from server and client side in the same pice of code. CXF helps as create new microservices with the speed of light.
* We monitor all Apache CXF reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. Validated reviews require the user to submit a screenshot of the product containing their user ID, in order to verify a user is an actual user of the product.