Thomsons are simply solid and reliable without weighing too much.
There are a lot of lighter posts out there but after trying a lot of them, I ended up with Thomson.
There are, as far as I can tell, no posts out there more solid/reliable. Due to construction I thought the Syncros would be similar, but the Syncros' bolts end up getting a bit bent (I think they're thinner).
Since I want a relatively light post that I put on and forget about, Thomson fits the bill. I have the same needs for a stem - but for stems I use Ritchey.
I even took off the stock USE Alien carbon post to put a Thomson on my bike. Heavier but more solid. I could have bought a zero setback Alien but I didn't think it was worth it, not with the Alien's clamp system.
If I were to upgrade, I'd get the Masterpiece. Otherwise no need.
I let the shop keep the bags when I bought my posts.
cdr