Is one larger than the other? Is there more gadgets to play with? Is the LS430 a better riding car than the Gs series?

i know that the GS 300 is a very sleak Luxury car, my cuz has one. its sweet

SORRY Mickey C!! I meant to give your answer a thumbs UP but mistakenly clicked on the thumbs DOWN!! [Out of habit - I guess]

As for the differences between the LS430 and GS300 - Mickey C answered best - so far. Think of the LS430 as a big, cushy pillow on wheels and the GS300 as a slightly sportier, somewhat less 'cushy', more economical LS430. I hope that makes sense. Two different cars - really - made to appeal to two different sort of buyers. Craig!! :o)