Definitely an upgrade from the Sentra. We were actually driving the Sentra to Kansas from Texas when the transmission went out in it. Only had 80k miles on it. It was under extended warranty so the transmission was replaced at no cost. Luckily I was following my wife in my Bullitt at the time so we weren't left stranded. As soon as the transmission was replaced we traded it in.
The TL's are nice outside, but holy moly they've got a load of problems that are manufacturing errors. These are problems I've had just with mine:
Complete tranny failure at 110,xxx miles
Dashboard cracking horribly
Navigation failure
3rd/4th Gear Pressure switch failure
APP sensor failure
O-ring failure
All engine mounts were completely busted at 103,xxx
...and the list goes on.
Sure some of these can happen to any vehicle, but the number of transmission failures is crazy. Dash cracking due to incorrect airbag design. Navigation failure due to the disk becoming scratched (...and then they want $100+ for a new disk EACH YEAR). Many of these Acura has even admitted they messed up and will pay for some of the repair, but there are ridiculous terms and they'll only pay a VERY small amount
I hope you have better luck than I have. I doubt you're aware of what maintenance the previous owner did, but I HIGHLY suggest changing your 3rd and 4th gear pressure switches (unless you've got really low mileage) and changing the ATF. There has been a ton of talk on this at Acurazine.com. A lot of owners swear by Redline D4 or even the ATF with no FM (friction modifiers). Some believe the ATF that honda uses had way too much FM in it and it caused tranny problems. Anyways, the other stuff and a lot of others on the list are just dumb luck if they don't pop up. Good luck!! Don't mean to scare you, but just be aware of how the car is shifting. If it starts to act funky, replace the switches and put in new ATF. I've got my eye on the new '13 Accord EX-L's with the v6 now. Hopefully i'll be able to sell the TL for a decent price seeing how it's got a new tranny and has the timing belt service done....along with all the other new parts I had to replace lol.