I've done reserve at 3 of the 4 bases and have found that reserve at ANC, LAX and probably PDX is liveable. Reserve in SEA BLOWS!
In SEA, you get called out for every little misconnect. Sometimes the crew is only running 30 minutes behind but scheduling is worried about the plane swap...call out a reserve crew....deadhead original crew in the back...deadhead reserve crew back the same day. Probably less of that now that we are so short.
Also, not sure if it changed now that they allow line holders to pick up simulator seat-subs, but Seattle also covers those. ONCE a year is enough for me so that was also a big negative.
Average SEA reserve seems to run 50-70 hours a month. Other bases seem to average 30-50 depending on their zone.