I think the TI flats are the most expressive, musical strings I’ve ever used. There is a huge range of sounds available, and it’s worth exploring. The feel is soft and supple, light years from the bridge cable tension of chromes.
Dig in hard and they get a kind of cough or sneeze, a forceful exhalation kind of thing going that is cool. They slap just fine, with their own kind of slap sound.
Anywhere from very lightest up to digging in they have a full, round, warm tone.
I had sticker shock the first time I bought a set. Since then, I just hand over the cash. They last forever, longer than a few boxes of round wound sets. I think they are most economical.
Break in time is a couple weeks of playtime. It takes a bit to get used to the feel, and sounds.
My only downside was the TI flats play so easily I could get lazy. Going back to rounds was messy.
Contact Jason at Fret Nation directly for special orders, he is beyond helpful.
And if they don’t work out, it’s easy to sell them used. I prefer to buy mine used and just skip to the good parts.