I'm a newbie two, but let me try and help as much as I can. I think that someone more expirienced will help also..
So you are asking which kind of bank loan is better - mortgage or personal??? Well, neither of them is good
-Mortgage is a specific loan tied up to a specific property
-Personal loan can be used for anything that you want, and anytime you want it
-Mortgage is usually coming with lower interest rate (up to 8%) and longer repayment period (up to 25 years)
-Personal loan comes with higher interest rate (up to 20%) and shorter repayment period (up to 6 years)
-So, you can't go to a lunch and buy something with mortgage - because you don't have one. You can get it specifically for that property that you want.
-You can go to lunch and buy yourself something with personal loan - by paying downpayment (which is usually 10%). But then you need to cover other installments (usually 10% in next three months with another cash payment).
Hope this helps a little