I have a set of TI Flats on my main bass for a little over a month and love them. They are the best sounding and feeling string I've ever played. Question I have for those that have used them is how long does it take them to break in? also does the tone change on them and do they lose anything or gain anything? Reason I'm asking is I love the tone right now and if they pretty much stay that way I'm going to get another set for my backup.