Due to their mass 5 strings become a lot more about user preference compared to 4 strings. There are so many variations that impact the B string; Scale length, string spacing, neck depth, body size, string trees, neck through vs bolt on, angled headstock and the list goes on.
I think you’re wise to start off cheaper and work out what you do and don’t like about it to better educate your choices in the future. I had 4 5 strings before going back to basics on a 4, and luckily the Sire V5 ticks a lot of boxes before I can afford a KS.