The Cirrus 6 is also really nice.
I have't tried a TL-Six, but I want to. Especially a first Gen.
But, when I had a Cirrus 5 and TL-Five, I thought they both sounded very similar. I preferred the Cirrus because of the neck. The Cirrus neck has a "bare wood" feel to it that I love. Plus I really like the Cirrus neck profile. Kind of wide-ish, with a thinner front-to-back and flatter back than other basses. The only neck I've felt that was anywhere near similar is a Roscoe.
OTOH, the TL-Five neck was glossy painted. I didn't like the profile as much. Not that it was bad. Just not as nice, for my tastes, as the Cirrus neck. And I really do not like glossy necks. Under a lot of conditions, they end up feeling like my thumb is kind of sticking to it instead of sliding smoothly.
So, I have a suspicion that the TL-Six neck is similar to the TL-Five. And I know (from having both) that the Cirrus 6 neck is almost the same as the Cirrus 5. Thus, I suspect that if I ever do get to try a TL-Six, I will end up preferring the Cirrus 6.
OTOH, my TL-Five had the same pickups as my Cirrus 5 (i.e. VFL). So, of course they sounded similar. The TL-Six pickup is totally different than a Cirrus 6 pickup - and I do love a good P bass - so I could be totally wrong in my theory that I will prefer a Cirrus 6 to a TL-Six.
Just FYI, in case any of that strikes a chord (so to speak) with you.