I love my Sachs New Success RD and 8-spd Ergo brifters. I've used them on five different bikes (2 sets in regular use now) over the last 24 years and roughly 40K miles. The brifters are rebuildable using Campagnolo Ergo rebuild parts and procedures. I have yet to wear out an RD, including the pulleys. BTW, I prefer to use these with Shimano 8-spd cassettes assembled from loose cogs. Some require Campy spacing (same as Shimano 7-spd), some need Shimano 8 spacing, all on Shimano 8-spd cassette hubs.