Either way you choose, you won't lose out.

Literal

Even-if-たとえ which-one [object-を] choose-ても, loss [topic-は] do-not.

たとえ + どちら ('which of two') + ても = 'no matter which of the two.' 損をしない ('won't take a loss') uses the idiomatic 損をする ('to take a loss, lose out'). A reassurance common in advice or sales pitches.