This might be duh for some people, but if you’re like me and considering a mortgage; at today’s rates in the US at around 5-6%, over 30yr mortgage you will pay about same in interest as you will for your house price.
Your $500k house will cost you around $1M total over thirty years.
I was surprised.
Offset is generally considered better because if you have an emergency or financial opportunity you still have access to cash. If you put extra into repayments you’re forced to redraw or refinance if you suddenly need funds.