rdgdawg

+1
As it's been said, no brainer

JDR76

I have had both (2014 IS350 AWD and 2015, 2019, and 2020 GS350 AWD).

The IS is a lot of fun and a great looker. Has the updated nav/infotainment over the older system in a 2013 GS (GS got the updated nav for 2015), though the GS has the much larger screen. No comparison on interior room, the GS is much bigger, while still not large.

Here, the GS gets my vote as well.

Toys4RJill

Low mile option is the better choice. I’ve always like the IS interior as it’s nice and cozy Exterior styling of either aren’t great IMO. GS has a fancier suspension as well. More room

Poobah

Well, I'm 6"5", and I fit into my 2005 GS AWD just fine. There's not a whole lot of wiggle room, but I've driven it 500 miles in a day without problem. Of course the way anyone fits into a particular vehicle is all based on their own dimensions. But I will tell you that in 5 years of ownership, I have had no issues with the car besides a couple of minor recalls that were paid for by Lexus.

arentz07

As an IS owner... I would've taken the IS if it were lower mileage and/or less expensive. But I have to say the GS feels like a much better deal. I strongly considered picking up a used GS back in the day. It's such a nice package overall.

Striker223

Between those GS all day, personally I would get a V8 car though and did just that.

Crios22

Meaning an LS? Or you talking about a different make?