Grandview WA to Gary IN preferred route ?

I know there are a few different routes all very similar in distance and time...Just thought I'd ask fellow tankers who are also usually loaded to around 80k lbs and know what it's like going over mountains...Last time I launched out I went through Spokane and into Montana, and while the scenery is beautiful it seemed like it took forever to get over the mountains in Idaho and Montana.

 

I ended up runnin I-80 through Wyoming...I usually run nights but not this time...I was surprised at how much traffic was on I-80 through Wyoming in the daytime and even into the night...Also there was a bunch of construction on this route too....I think next time I'll run the I94>I90...Much better scenery and less traffic