I agree with QL about AVIS especially in LAS. They have excellent service if you are preferred. I'll share my list although it's shorter than the one I have for AVIS.
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000252 AAA Texas
PC# 160926-$5 off/weekend day up to $20-- Class C,D,F—2 day min exp 06/30/02
PC# 160904-$10 off weekly-- Class C,D,F—5 day min, exp 06/30/02

336436 Costco

205521 Entertainment Book

154080 Marriott

269339 NWA

1244828 Smarter Living
PC# 913603 15% off and free upgrade

217692 American Airlines


PC #s COMBINABLE WITH OTHER RATES
PC# 928281 $20 off (class B,C,D) or
PC# 928292 $25 off (class F,G,I,L,R,U) exp 04/30/02

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Try combining PC# 160926 with your AAA CDP code or the one listed above for an extra $5 if you still wish to use Hertz in LAS.