Those TI flatwounds sounded like what I should try as my first experiment with non-factory strings until I just read a bunch of reviews that describe them as being very low tension and "like spaghetti noodles". I'm afraid I'll be buzzing all over the place if I try such soft strings on a five string. I shudder at what that B string would be like. Is there any such thing a flexible flatwound that isn't low tension?
Actually, as having used TI Flats on a fiver for several years now, I can say that the TI flat B string is about the most musical and useful b string I have come across. First of all, unlike the TI E and A string, which are lower guage than normal, the B string is .136. It is huge! It is NOT floppy or loose at all, but feels like a .125 b string from a set of good rounds. It has the absolutely perfect amount of sustain, thump and clarity for everything I have used it for. I use the B string ALOT, mostly above the 5th fret. For me it is about playing in position and not so much about low C's. This B string is excellent for that purpose, and isn't much louder or softer than the rest of the set but is quite well balanced. I have also experimented with the TI set but with the Chrome B string. I noticed virtually no difference in Tone or playability even though the chrome is .125-also an excellent B string. Surpisingly, the chrome B blended very well with the TI's. I put the TI B string back on just so everything would match, and because darn it, that TI B costs $25!
Everything that TI does, is to achieve balance, so one string isn't way louder or softer than the next. What you will find with TI flats, is that you no longer have to worry about upper fret passages disappearing, since the G and D string are so well balanced against the E and A. That is the reason for the unusual gauges.
Your left hand will love the hell out of the TI's, and your right hand will get used it, you just have to learn to play closer to the bridge. I will admit that when I put chromes on my Sadowsky, I liked the right hand feel alot better. However, I didn't like the way the chromes responded above the 12th fret, a little too thumpy for MY taste. The TI's sustain a little more and just sound so natural. They don't have the same attitude that chromes do, but I always return to them when I try something else.
There are Many Many positive reviews about TI flats, don't be turned off by one review. From my talkbass experience, the top three flats seems to be:
Chromes, TI Flats, and Labellas. They are VERY different and each will appeal to different types of players.