I've owned this camera for 3 months and have used it extensively throughout this time period. I predict the EOS RP will become a Canon classic model and one of their best selling products ever. Here's my reasoning. Having owned a multitude of Canon cameras, including an EOS 5D MK III, I can emphatically state that this camera takes the best pictures of any other camera I have in my inventory. I specifically chose the RP over the R model for two primary reasons. First, the programmable mode dial is a very important feature for me, as I prefer manual selection dial usage during my shoots. Second, the cost differential supported the RP's selection because the nuance differences in capabilities more that justified it's choice.
The mirrorless feature makes this camera small, compact, and tough. As a traveler, I appreciate its size when packing for a trip, although I do take a variety of lenses with me. The adapter that came with the camera is a godsend as I'm able to use all my EF and EF-S lenses for any shot settings. The Canon company hit a home run with that adapter addition. The full frame capability was the final factor in selecting this camera as a new purchase. Although I previously owned a 5D MKIII, I know the RP takes better pictures. Perhaps that's due to the updated technology, but the difference is noticeable.
I'll leave the technical aspects for others to describe, as I don't care to analyze or pontificate upon those features. I will say this camera is extremely simple to use, if you are familiar with all the buttons. Canon enthusiasts will easily transition into this device as its operation is very similar to other Canon cameras. While some may describe it as an entry level full frame camera, I found it to be much more. It is definitely a professional camera for those who work at that level. This is an outstanding camera for anyone no matter your expertise. If this is your first camera or you are new to photography read your technical manual and then order one of the pro photographer's books for the EOS RP. The pro book for this camera will be out in August 2019.
I cannot say enough positive things about this product. It is a spectacular device that produces extraordinary pictures. For all the men, buy the extended grip as we need it to properly hold and balance the camera. I highly, highly, highly recommend the EOS RP.