If I had a quarter for everyone that went with a 30 and wished they had started with a 50 I'd be retired (or atleast working one less job)
Why buy twice? Get the 50 up front.
with the OS50 Hyper or better yet, the YS-50 (if you can find one - they are more rare then hens's teeth).
You say that like you are convinced they are "better" I'm not so sure they are.