We purchased both the LR-AWD and SR+ back in May so having both I have a few notes from my perspective.
As far as range goes, that's a personal usage consideration, but I've gone Ottawa to Toronto in the SR+ without issue, just a 30-35 minute pit stop in Belleville at the super charger which was fine. I may have been able to make the full way in the AWD, but likely would have had to stop in Pickering or Port Hope instead. For my around town usage, I haven't had any issues or struggles. That being said, I haven't gone through the winter yet, so more range may be more precious in the deep cold. Likewise, I cant speak to winter handling, but I did a lot of reading/research prior to our purchase and it seems the RWD is perfectly fine in the winter.
The SR+ is fast and responsive, and the AWD is that much more, which we really don't need or take advantage of in comparison. Sure its fun, but I am not an overly aggressive driver so the SR+ is more than enough power for me.
The SR+ stereo is awesome (by my standards), a lot better than any of our previous vehicles, but the AWD is a lot better than the SR+. I'm by no means an audiophile, but if you can definitely notice the difference. The AWD is definitely fuller, but if I didn't have the AWD, I would be quite happy with the SR+.
The other features that set the AWD apart don't really appeal to me. I got all weather mats for both, so I didn't care about the lack of floor mats. I prefer the vector maps to the satellite maps. The real time traffic data is nice, but not a deal breaker. We both use apple music and slacker is pretty blah, so the streaming isn't ever really used. I don't care about the web browser, sure its a novelty, but I am more apt to use my phone instead. And we don't park in our garage so home link isn't used.
All that said, I love both cars. If money was no issue, I would certainly go AWD without question. Luckily for us, our situation allowed us to get one of each, and I am quite content with the SR+. In hindsight, I think we would have been happy with 2 SR+s, but I don't regret the upgrade either. There is some comfort in the back of my mind about the extra range and prospect of better winter handling.
Reading this back, I don't know if I offered anything, but the TL : DR is SR+ is awesome and I am perfectly happy with it, but the AWD is better. It's ultimately up to you if its 16k better.
Also, may be worth noting, that the 16K difference becomes 18K when you tack on the HST.
Thanks- I appreciate your unique perspective of having both models. Forgot about that HST too- those upgrades are not quite worth 18k to me. It may mean an extra 45 minutes at $20 at a supercharger every now and then, but sounds like a good trade off.