The BB7 pads are a little difficult to change, but that's really no criticism of the pads themselves. The work well and are long lasting in our flat area of the country. I generally prioritize quiet brakes with good stopping power over durability since I don't mind doing my own maintenance.
These brake pads are use on the parking brake (rear wheel) of my recumbent trike. Therefore, they will not get as much wear as normal brake pads. I expect them to last a very long time-barring any chipping or damage. They are very easy to install.
Don't stress about changing your own disc brake pads-it's pretty easy. I recommend the organics, but it's true the metal sintered do last longer. Order a set, watch a YouTube video and give it a try.
With the bike shop all backed up with bikes to repair I decided to try to replace my own brake pads. I watched a couple youtube videos to figure out how to do it and all went fine. I now have new brake pads and feel empowered to do more of my own repairs and maintenance.
You can do it. There are tons of videos on YouTube to walk you through it. I have used both the organic and metal pads and really prefer the organic-much smoother and quieter.
As a roadie, I have little experience with disk brakes. These are my first. I was impressed by how remarkably easy one can change them out in the field. I carry a spare set on all my multi-day tours.
this is my first replacement, 1st set lasted 4 years of 5 days per week, all year florida). They took one-two rides to break in but they work great now.
I use Avid JuicyBB7 Disk Brake Pads on my Volagi Liscio & Trek Portland. I can break with much more finesse i.e. don't over or under brake. Perfect on wet Portland streets. Also a big plus on a huge downhill run where caliper brakes are smoking and overheating the rims, the disk brakes have no probs.
I use the organic pads as I find the quieter than the metal pads. I have avid mechanical brakes and I would only use avid pads. Other brands are not as good.