Repower Scag Tiger Cub,or buy something brand new?

Please help me try to decide what to buy. I'm 2 yrs into being into the lawn mowing business in florida,and I will never mow more than 20 yards per week. I want to buy a zero turn mower,but you also need to know that I don't have a backup mower,unless you consider a self propelled mower a backup mower. I'm not mechanically inclined in regards to doing my own repairs. I have $5,000 cash,and I will have to borrow money from my parents if I buy brand new. Which mower should I buy?

2006 Scag...

Repower Scag Tiger Cub,or buy something brand new?