Squaw/Alpine get much more natural snow in normal or better seasons than Heavenly/Northstar, though less than Kirkwood.
I think choosing between those 2 passes is a close call. Close enough that if you have lodging base at north or south shore, that might tip the balance for your decision.
For terrain quality, I'd lean toward Squaw/Alpine a little bit. A lot if you're doing any skiing outside of Tahoe because the other Mountain Collective resorts are far superior to the Epic resorts overall IMHO.
And if late season as important to you, Mammoth is far superior in April and later to anyplace at Tahoe. That argues for Squaw/Alpine Gold to get half price at Mammoth along with the other MCP resorts.
Tseeb is based in south shore but also travels. So he gets Tahoe Local plus MCP. I suspect there are many people with lodging bases in south shore for whom this would be a logical plan.