One Piece vs. Two
Two-piece toilets, consisting of a separate tank and seat base, are the more common option. The pieces are made to fit together, but they’ll always have some sort of seam, which can become a trouble spot for cleaning.
Two-piece toilets have the advantage of being easier to transport and carry, which can be important for DIYers, especially if the toilet needs to be carried up stairs.
It’s worth noting that one-piece toilets can come in relatively traditional-looking styles as well, so if installation isn’t an issue and it fits your budget, a one-piece is generally the more recommended choice regardless of your decor type. However, for some people the classic charm of the two-piece style is worth the extra cleaning effort.
Both styles have their advantages, so it largely comes down to personal preference.
Contributor - Yanic Simard
Founder, owner and principal designer of the award winning residential interior design boutique firm Toronto Interior Design Group. https://tidg.ca/#yanic-simard