as @three_easy_payments has identified, your speakers are the determining factor here. You are really going to have to audition a range of tube amps before purchase as the results of the complex speaker- amp output stage interaction can not be predicted accurately from specifications and will tend to dominate sonic outcomes.
Conventional wisdom would dictate that those amps with a 4 ohm tap would be more successful. However, this may not be the case and each amp should be auditioned on its own merits.
I would therefore caution strongly against falling into the trap of auditioning a single recommended amp and buying it because it sounds nice (most tube amps sound nice), and instead make a point of auditioning a range of different tube amps before you take the plunge on your favourite.
I would also have a really good SS power amp on hand as a baseline reality check as to the overall viability of tubes with your speakers.