Would not recommend at all.
Economy Car Rental is just an on line broker. Verve is the actual company. It is NOT convenient at all. We got lucky and the 2nd bus was at the pickup when the rental car bus dropped us off so we didn't have to wait. Be prepared for a lengthy check in process however. They call your insurance company to verify your coverage if you don't want to take their insurance. The vast majority of people will not have the correct coverage (loss of use) so they will want to put an additional $500 hold on your card. Given the hassle, the repeated questioning and the signs everywhere about additional cleaning charges, I opted to just take the $20 per day insurance. On top of that we had a 6 day reservation. The weekly rate was $30 less overall but I wasn't given that option. While its true the base price is lower than any other car rental at LV airport, you will end up paying more in the long run.