I just bought a pair of Dublin Defy half chaps. They are BEAUTIFUL. Lovely leather, fit really nicely (I bought small, because I'm short and slender) and just look lovely. I looked at a pair of Ariats (the Concorde??) and didn't like them much, and they were $10 more expensive than the Dublins. For lower quality! The zips on the Dublins are nice and strong, and I used to have a cheap pair of Dublin half chaps that were lovely and soft but fit really well and stayed up just nice - but the zip was cheap rubbish and broke. So zips are one thing I'm really fussy with!
I also bought a pair of Dublin Defy boots to match the half chaps, and so far I'm very happy - they're my new show boots/chaps, cheaper than tall boots and a much more flexible fit. I'm thinking I might get another set of Defy boots/chaps for home, we'll see :)