If you are spending the night in Tonopatch anyway, and want to see some different sights...a good option would be to take US93 out of Vegas until SR 375. SR375 is better known as the Extraterrestial Hwy. 375 to US6 and into Tonopah for the night.
Next day take 6 over Montgomery Pass to 120 and then 120 over to US395 and up to Reno you. See some nice/different country and it doesn't add a lot of miles.