Conector	En español	Ejemplo
On the one hand…, on the other (hand)…	Por un lado…, por otro…	On the one hand, it's cheap; on the other, it's miles away.
Mind you,…	Eso sí,… / Aunque, ojo,…	Cornwall's lovely. Mind you, it's a long way.
Having said that,… / That said,…	Dicho esto,…	It's expensive. Having said that, it's worth it.
To be fair,…	Para ser justos,… / La verdad es que…	To be fair, he did warn us.
Then again,…	Aunque, pensándolo bien,…	I'd love to go. Then again, I'm skint.
At the end of the day,…	Al fin y al cabo,…	At the end of the day, it's your decision.
As far as I'm concerned,…	Por lo que a mí respecta,…	As far as I'm concerned, a beach is all I need.

Mind you es muy británico y coloquial: añade una pega a lo que acabas de decir. Y fíjate en la preposición: on the other hand, nunca in the other hand. (Skint — sin blanca.)