what should I buy?

[drtydog]

I found a 2003 Escalade 5.3 at a local yard with 85k on it for 1200 with harness and ecu complete but after thinking about it I started calling around to other yards and found a complete 6.0 with harness and ecu pedal ect.. 130k out of a 2004 silverado 2500 on it for 1400. What I would like to know is either one worth the cash or should I wait for a lower mileage donor? I'm sure I can find low mileage motors less without the ecu and harness and buy aftermarket stuff but is it worth the cost? Are more miles worth bigger motor? What would you do? This would be going in 65 long step. Thanks for any input!