I can't really compare the HW50 to my old R8 since I have never owned the HW50. I just know that they have both been sold as a springer with power intermediate between the R7/HW30 and the R9/HW95. I think when you start talking about noise and cocking effort it becomes rather subjective. That said, I can shoot maybe 100 rounds through my R9 before getting tired, but I have been doing it a while. No doubt though that the HW30 would be easier cocking, and quieter too. So the question comes down to whether you would be willing to put up with a little extra cocking effort and noise in order to be able to shoot more effectively at longer ranges.
On Annies, my first was a 141, then I added a 54 Sporter and a 64 MPR. Love them all, but shoot the Sporter more than the others.
When you do get your springer, it will be like learning to shoot your rimfire all over again, except groups at 25 yards will be about what you get from a good rimfire at 50 yards. Get good pellets, I use JSBs and find them most reliable. Use the match flat head pellets indoors to get clean holes, and use the field target round head pellets for good stability and accuracy at longer ranges and in the wind. Experiment with where to rest the rifle, usually somewhere around the balance point, and pay close attention to hand shoulder and cheek pressure. Sound familiar?
Hey, welcome to the club and have a blast!