If you got 150K out of the original struts and were happy, I think that would be the best place to start. On average, I find the Toyota dealer I use for service to be half the price of the Lexus shop and is even closer in my case. Sure, no loaners, etc. However, I did not get a loaner when I had the brake recall done nor the floor mat clips replaced as those were under 2 hours of labor. Had to wait around while it was serviced each time.
What is the Typical Life span of a Lexus Strut? I recently purchased my first Lexus, a 112K RX330 AWD. It now has a little over 115K. I have not found any evidence that the struts have been replaced and I am thinking 115K is probably pushing it. Sounds like Toyota struts may be cheaper but will the ride be sacrificed? I am assuming if I had air ride it would be rather obvious and I do not see any tubing atahced to the strut. Thanks