If you like the sound but find the TIs are too floppy for you, try LaBella Low Tension Flats. They are very similar, just a little less floppy.
I don't agree about the sound. TIs do not sound like LTFs. LTFs sound much more like DTFs than they do TIs. TIs really have a very unique tone that is difficult for me to describe.
Once broken in, LTFs are very good feeling and sounding strings. They're just not much like TIs.
