[LanceH]

If I had to choose, I'd pick string interpolation.

i += 1 means an extra line, but that extra line is very clear.

Ternary vs an if-else arguably loses on clarity except for the simplest of cases.

"Today's date is #{date}. Your balance on account #{account.Number} is #{account.Balance}"

"Today's date is " + date + " Your balance on account " + account.Number + " is " + account.Balance

The second is a mess of +'s and "'s to me, not to mention the awkwardness of formatting spaces before and after each quote. The first, you write a sentence and plug in the variables where they belong.

Not saying you're wrong, just what I would choose.