I prefer Segwit that will not produce a coin split but can still deal with the burgeoning transaction clogs.
It seems almost certain that there will be a chain split at some point.
Either SegWitx2 will fail and UASF will happen with a minority of hash rate, causing a chain split, or SegWitx2 will succeed and there will be a hard fork to 2MBblocks three months from then.
If the 2MB hard fork is high consensus then it's not too much of a problem, but I consider that unlikely. Personally, I also think UASF on August 1st isn't particularly relevant and is over hyped.
UASF
would cause a chain split if there is a minority of hash rate support, and the UASF chain will remain negligible if the majority of merchants and exchanges continue to use coins from the legacy chain.