[lusterblade]

*** 2008 *** 2008 *** 2008 *** 2008
***Cadillac ***Buick ***Cadillac ***Buick
***DTS ***Lucerne ***STS ***LaCrosse
***V8 ***CXL V8 ***V8 Luxury ***CXL
***Current ***Current ***Current ***Current
Interior Dimensions
Headroom (Front) ***39.2 *** 39.5 *** 38.7 *** 39.4
Headroom (Row 2) ***38.6 *** 37.6 *** 37.9 *** 37.2

Hiproom (Front) ***56.9 *** 56.7 *** 54.6 *** 55.3
Hiproom (Row 2) ***56.7 *** 57 *** 55.6 *** 54.6

Legroom (Front) ***42.5 *** 42.5 *** 42.6 *** 42.3
Legroom (Row 2) ***41.6 *** 41 *** 38.3 *** 37.6

Shoulder Room (Front) ***60 *** 58 *** 58.6 *** 57.2
Shoulder Room (Row 2) ***59.2 *** 57 *** 57.4 *** 57

Capacity & Volume
Passenger Volume (EPA) ***113 *** 108 *** 102 *** 100
Passenger Volume (MFR) ***115.3 *** 108 *** 102.9 *** 99.4

Cargo Volume (EPA) ***19 *** 17 *** 14 *** 16
Cargo Volume (MFR) ***18.8 *** 17 *** 13.8 *** 16

Identification
EPA Class ***LARGE ***LARGE ***MIDSIZE ***MIDSIZE

Using all these stats, I would consider Tony the winner because you(Katshot) were pointing out the leg/feet room(or lack of), which Tony addressed. Yes, head room and shoulder room are comparable but I don't believe that was the initial point that you were arguing.

Also if you look at Passenger volume and cargo volume, the DTS and Lucerne are similar, as the STS and Lacrosse are similar.

Note: This is all the data I could find regarding interior dimensions.