Well, I'm not sure I have the stomach to keep researching the many possibilities in relation to "stock", Mevotech, some like Bilstein, some think they're too stiff etc.
I have stock springs, apparently "Heavy Duty" of which I do none, I have a tow package and don't anything towable. I have New ACDelco struts (same part# and verified by the local dealer as what they install as OE at the dealer. I have Bilstein 4600's on the rear. Upsidedown (which after reading probably makes no difference but will have it fixed.
When I go over bumps over 35mph or so the tires bounce and do not stay on the ground. I had a Lexus with a blown airshock that did the exact same thing until fixed.
With new (reputable) struts/shocks, most front suspension parts replaced with a Mevotech kit (which has good reviews and didn't change the ride much if at all), new excellent tires, the only piece of the puzzle left is the springs. If they are truly "heavy duty" then it makes sense to me that with no load the tires bounce and do not absorb more energy from bumps etc. from the road even with new struts/shocks.
I plan to talk to the dealer about springs and ask if they have regular duty springs for my Tahoe. If so I'll compare to the research of Moog springs then have something installed.
My #1 priority is a better ride, not keeping it 100% stock. I love everything else about this truck. Except the dash cracks. Maybe the mpg.
I do plan to raise it 1 in which I think will take care of the random tire rub I get on the wheel well when turning in and out of my driveway. Looks a bit meatier too.
More to come.
@iamdub
@swathdiver , thank you for the info, I've been reading Mevotech user comments.