Helvetica All Caps
When something needs to pop I tend to use this font as the words are large and easily identifiable. This particular variation of font uses only capital letters. I'll use this font commonly on vehicle and boat VIN / HINs.
Roman font is always classy. Named after the newspaper it was made for. Goes well for just about any plaque engraving.
The perfect font when you want to impress your girlfriend with a special gift. I usually use this font on necklaces.
Old English - Lending an air of old-time sophistication, you cannot go wrong with this font.