Replaced the BB on my 4 year-old / 19,000 mile Specialized Roubaix. I opted for the Park 59.3 BB tool rather than using an adapter. I replaced my crank at the same time because a full crank on sale wasn't much more expensive than the regular price of the big chain ring that I needed to replace.
I hadn't done a repair like this on this "generation" of Shimano drivetrain technology. It was surprisingly easy to do. If you have moderate wrenching skills and access to YouTube, this is definitely something you can do at home.
I have been riding with SRAM's Organic/Steel brake pads for 4 years now. They are mostly quiet, as advertised and despite the description indicating that the braking power is not quite as high as other compounds, it is plenty strong for me. I can brake as hard as I would ever want.
Only downside may be the life of the pads. I find that they last about 3000 miles, which is less than a season for me. I haven't tried others, so I cannot compare.
This dropper lever is really nice! I started with the more common lever on my gravel bike that allows a pull/push from different positions. It was stiffer, and with slightly arthritic fingers, I had to get my hands in a slightly awkward position, push the lever, and then change my hand position. I could do it, but I avoided it if I could. This new lever is so much easier and more convenient to use! Even with a sale price, it still stings a bit, but I don't regret it!
I bought the 11-36 version to use on my 8100 ultegra bike for a sub 1:1 climbing ratio. This is technically out of spec for the ultegra rear mech, but after a small b screw adjustment it is working without any issue. The ultegra cage is shorter, so maybe chain wrap could be an issue, but using the auto shift function prevents any extreme cross gears where chain length might be a concern. This 105 cassette does not have the HG+ teeth profile, but I honestly cannot tell any difference compared to my ultegra cassette while riding.
