I'm also running a t450, albeit w/ only 16gb ram and a 500gb ssd. Fan noise is not bad, certainly not loud enough to be distracting. I purchased mine refurb through Amazon for the 6 month warranty, but didn't need to use it. Wifi works great under Debian, but I could not get the Bluetooth card to work reliably. I replaced it with a card designed for the t430, but it wasn't all that easy. I would advise just using a USB Bluetooth adapter.
The only other complaint I have is that palm rejection for the track pad is poor, I eventually disabled the track pad entirely. I prefer the track point anyway, but I know a lot of people hate using them. Keyboard is excellent, IMO better than a MacBook. I would be curious, perhaps the OP used 2 500gb SSDs, you can get drive caddys to replace the DVD drive (I kept it, as I still need to read disks relatively often).
There's supposed to be a better alternative to the Synaptics stuff, now, so I read a few months ago, but I forgot to note it and haven't actively searched it out, yet.
The only other complaint I have is that palm rejection for the track pad is poor, I eventually disabled the track pad entirely. I prefer the track point anyway, but I know a lot of people hate using them. Keyboard is excellent, IMO better than a MacBook. I would be curious, perhaps the OP used 2 500gb SSDs, you can get drive caddys to replace the DVD drive (I kept it, as I still need to read disks relatively often).