I have tried Pyramids, TI´s and Chromes on my DeArmond Starfire (w/ Dark Star pups). LaBella DTF´s I have only tried on my Rickenbacker and I do like them a lot. But that´s a different bass. Besides it´s long scale so I can´t say anything about tension of LaBella´s on a short scale bass. However, I noticed that LaBella set with .105 E-string was much higher tension than a set with .104 E-string. I mean the difference was much bigger than you might think just reading the numbers.
Back to short scale, or medium scale strings. Chromes were pretty OK tension wise. I would say they´re medium tension. Sound I didn´t like, too bright and clean. I only had them on for a few weeks. Maybe they were just getting better when I took them off?
In my opinion TI´s weren´t so low tension on a short scale bass. I have them on my J-bass also and they feel lower tension on a long scale bass. Usually it´s the opposite and I might remember wrong. Medium scale set E-string is .106, long scale E-string is .100. Otherwise gauges are the same. Possible problem for some people is uneven tension between the strings.
It was already some years ago when I tried the TI´s, but if my memory serves me well, they sounded very nice. Quite a lot of midrange which was actually only a good thing. The only reason I took them off were the Pyramids. I liked them even more.
Pyramids are higher tension than TI´s. I would say they are medium tension but more on the higher side of medium. Like so many others on this forum I wanted to get as close to Jack Casady´s Airplane-era sound as possible. Of course I didn´t get there but Pyramids sounded pretty much the same. Other strings weren´t even close, IMHO.
I ordered my set of Pyramids directly from the factory. I just told them how long strings I need, what gauges I want etc. Their customer service is excellent and easy to deal with.
The set I received had a dead E-string but they were more than happy to send me a new one. They even gave me a new A-string to replace the one I destroyed by myself. I asked them if they could sell me just one string because I broke my A-string (it was completely my own fault). They send me a new A-string and didn´t want any money for it. They even paid the postage. Later they send me email to make sure I was happy with their strings. I have only good things to say about Pyramid.