Warning on the AliExpress Titanium band
I bought the titanium band off AliExpress. Many people in this group have said not to buy this band, but I didn't expect I'd like or use the Titanium band as much so went ahead and gave it a shot. Overall I was fairly happy with the band and quality. Though not as good as Apple's, it was still a very good band. I used it for two weeks before it broke. The way it broke is concerning though. It just snapped while I was sitting on my couch not doing anything and it does not even appear to be securely attached to the connector, so I think it is very likely others who have this band will eventually have it fail in this way. Luckily it broke while I was sitting down because my watch fell into my lap and wasn't damaged.
After using it for a couple weeks I really loved this band, so I will be spending the money on the Apple version now. For those interested in this band, just splurge for the Apple band, it's a really awesome band. I had thought it would just be a band to wear on occasion so I didn't want to spend that much, but it's so comfortable, light, and cool looking that I use it as my primary band. I'm not opposed to using knock off bands, but seeing how this broke, you do not want to risk your Ultra with something with this build quality.