Would you recommeng K Gut over something like Babolat Tonic+ natural gut?
Excellent question. One way to look at it is in terms of economics. I can buy Babolat Tonic natural gut from TW then have it strung by a top pro tour stringer for a total expenditure of $50. Or I can buy top of the line Babolat VS natural gut, installed, for a total of $60. Or K-Gut/K-Gut Pro installed for $36.50.
I have played Babolat VS, and like so many others I found it to be what tennis dreams are made of – especially at the mid-tension.
I have not played Tonic. Many on this board recommend it as a decent compromise due to the high price and exceptional performance of Babolat VS. But my sense is that if you don't mind paying an extra $13.50 for Tonic above the installed price for K-Gut/Pro, you might like to spend the extra $10 for Babolat VS – at least once. After you've played Babolat VS, you'll know what the best multifilament strings are attempting to be like.
K-Gut/K-Gut Pro is probably the best “gut-like” multifilament – in my experience, along with the advantages of multifilaments. I play multi in the outdoor summer season because it's more resilient than gut, when exposed to heat, high humidity and sudden drizzle or downpours.