Today I compared side 4 of Tift Merritt's "Traveling Alone" on the initial release at 45rpm vs. the box set at 33rpm.
The 33 rpm box actually sounds the best being more open, more air, bass lines easier to follow and lower registers are more fully fleshed out. Tift's voice here, allows you to hear more into it thus appreciate her natural, mellow, fluid texture than the 45rpm.
Townshend Rock 7, Funk Firm FXR II, Dyna Karat 17D3