What is everyone using as their default text message client?

I’ve used Google Messages and Samsung message - they both seem identical.

I find both of these are very limiting when trying to send pic or videos. There must be a size limit with these two apps.

When I had Verizon service I used their Message + text message app and I thought it was quite good.

SMS or RCS makes no difference to me.

Anyone use WhatsApp for default text messaging?