All have made good points here. Don't also forget that when the machine is returned it must be full of fuel. Several years ago that was not a big deal but these days it cost a good bit to fill a machine up. Also I have never rented a machine other than a trencer but some places want to charge a warranty that you may or may not want. It may be worth getting with the rental if you have no backup money to fix it if it does break and they stick ya with the bill.
2007 Classic Chevrolet Silverado 4x4 RC Duramax/Allison
2004 John Deere Series II skid steer
2001 New Holland TN70
1976 Massey Ferguson 255