Looking to move to a Tube Integrated setup

With your speakers you need to be looking at something Single Ended(1 pair of output power tubes),Pure Class A..If you listen to strictly vocal/elevator/pipe & slippers music the 300B is the way to go..If you listen to a variety of music then KT88/KT120/KT150/KT170 would get the call...There is also Single Ended Class A EL34 but I prefer the bass & mid bass of the Pentode tubes..
There are several manufacturers making such amps like Mastersound Icona,Icon Audio ST30SE,Unison Research Preludio,Rogers Audio 65V2 & the Lab 12 Suono Mk.II...

I do listen to a wide variety of music. Classica, choral and jazz to blues, country and rock

I would look seriously at the AudioResesrch I-50. If your moving from as then this is probably the musical sound you are looking for. Very natural, outstanding rhythm and pace with great detail. Built like real audiophile equipment. I own PrimaLuna and my main system is Audio Research. The ARC is in a different class.

Those tube amps are likely overkill for 98db speakers.  What is the make and model of the speakers?

Tekton Moabs with Be HF drivers