Okay, sorry for the delayed response all. Typed this up on my tablet last night and it got borked just before I was ready to post. Was too frustrated to type it all out again...
Spent the day yesterday trying out a bunch of options. All were loaded up, leather, automatics with most options and pretty much all around the 20-25K mark (with the exception of the Lexus);
2013 Chrysler 300 - Didn't even take it out of the lot. Fit was okay except for headroom with the moon roof. Fit would probably be fine without one but the interior styling did nothing for either me or the wife. Too stuffy. I'm not ready for the retirement home yet. ;-)
2007 Lexus ES350 - Just about took my right ear off trying to squeeze in the drivers door. Once inside the headroom still wasn't great. Definitely not an option.
2012 Lincoln MKS ecoboost - B-pillar was a definite impediment. I'd need a resident chiropractor as I literally could not sit straight in the drivers seat. It shoves me to the console. Didn't bother taking this one out of the lot either. Pity.
2013 Acura TL AWD - A little bit cramped in the drivers compartment but doable. On the road I was impressed with the power and acceleration. Handling was tight and confident. Braking was very good. Reminiscent of the Wife's V8 LS but with better brakes and pickup. Definitely worth considering. Would have liked just a bit more hip/shoulder and leg room.
2013 Cadlilac CTS - B-pillar was a bit of an impairment but not too terrible. Can't say I was impressed with the power, handling or the way the transmission shifts. Acceleration felt sluggish, steering unresponsive, shifting a little spongy and it seemed to work far too hard for the acceleration being achieved. Ride was certainly smooth and quite but definitely felt disconnected from the driving experience.
2014 Dodge Charger - I've rented many of these in the past and knew they were roomy. They've just never done much to excite me. I had hoped that one fully loaded and decked out with leather might be a bit more enticing. I was mistaken. Like putting lipstick on a pig. It's still a Charger. Not for me. Good power and roomy but that's about all I can say. Steering is sloppy and braking is lackluster. Feel even more disconnected than in the CTS. I would feel like I was compromising way too much for the room. I might as well stick with an SUV. There is little improvement in driving experience except for the better acceleration.
2014 Nissan Maxima - I was surprised by the room in the Maxima. No real issues with the B-pillar or headroom. Better hip and leg room than the Acura TL. Power and handling were also impressive, nice and tight and responsive. The big problem we had with it was the noise. Holy crap we could barely hear ourselves think! From about 60km/h on up there was a hum that would grow louder. Didn't sound like wheel noise or normal wind noise. I'm not so sure there wasn't something wrong with it but the sales guys said Nissan doesn't put insulation in the doors. What a way to kill what could have been a really nice ride. I might try another just to see if the noise was typical but a comparison review I just read put the Maxima in last place for noise so maybe it is normal. Pity
Also sat in a Nissan 370Z. Headroom was okay after reclining the seat a bit but when I closed the drivers door the "sardine factor" definitely became apparent. Not enough shoulder room.
Overall I would have to go with the TL as the clear winner from this group. The others were either just not a good fit for my particular body shape or seriously lacking in the driving experience. It's really too bad about the Maxima because it had that little bit of extra driver room I would like in the TL.
Much as I'd like a Jag or a 7 series Beemer I can't imagine they will be within my budget unless they have serious miles or age on them. I'd prefer not to go there.
Thanks to everyone for all the suggestions. Hopefully my cursory report above will spark some more suggestions.