I would.
If you only have one retro gaming PC then Win98 is a great choice. But if you have multiple, personally I think it's more interesting to try to use different OSes on them.
I have a 233MMX which I installed as a Win95/late DOS machine. The video card is currently a Rendition, but I could change that as the mood/game selection requires. To me this machine represents the Win95 period so it just makes sense to stay true to that.
Some Win95 games complain about Win98, and even if I could get those to work, I would still rather have the Win95 experience on what I view as a Win95 system. I want that PC to feel like ~1997.
Important technical advantages of Win98 (relevant to a system that can't run games that require it) are USB and FAT32 support - but both can be added to Win95 by using the later "OSR" versions. I've never messed with that so no idea how well it works.
You could do a dual boot with NT4. It's not as compatible with games as Win9x but many games of that period do work with NT. Nice thing about NT4 is that it's stable.
If you use either Win95 or NT4, think carefully before installing the "Active Desktop Update" which gets offered with the IE4 installer. Some people like it because it adds Win98 conveniences that are missing from the Win95/NT4 GUI - but it also slows it down. Personally I don't like how it bogs down a Pentium 1. If you've never tried it, make a disk image first in case you change your mind.