05-07 STS quarks/issues? Any?

[99STSGUY]

Hey just wondering if any one knows or who has had or currently has one of these cars 05-07 sts body style, of any of the quarks/issues/probs commonly this car may have. i have my eye on possibly upgrading but want to know based on other experience you all can share. -pretty sure 99.9% if i do one it will be 05, northstar, rwd, sunroof, nav.. havent drove one but cant wait (push button start looks awesome!)
*Rear end noise? like 03-07 cts has (least few i heard)
*tire balancing probs like 98-04 sevilles?
*northstar still leak commonly?
*5L40E tranny strong? shift control work well?
*trunk leak?
*nav system work well/plays dvd nicely in park?
* does it have an AUX input for ipod/zune MP3 etc..?

so any help will be appreceaited!! thanks-mn

[jono6406]

I hear other people gripe about their STS' " the nav this the nav that,the small glovebox ,removal of bumper to change a light bulb etc and so on but let me honestly say that my 05 1SG with ACC/HUD is a beast and is trouble free and I love it.After 54k miles this car still amazes me.I'm not saying they are perfect for all but it is perfect for me.

[jono6406]

I hear other people gripe about their STS' " the nav this the nav that,the small glovebox ,removal of bumper tochange a light bulb etc and so on but let me honestly say that my 05 1SG with ACC/HUD is a beast and is trouble free and I love it.I'm not saying they are perfect for you but it is perfect for me.