Both my drummer and lead guitar player swear by Reverb. My drummer buys most of his replacement kit pieces from Reverb and has never had an issue. Personally, I am more of an "instant gratification" person and want to walk out of the store with my purchase.
That said, my wife recently bought me an Eden WT800 from Guitar Center (used). When it showed up it was damaged and didn't work. They took it back and gave me a newer used one in better condition that was $800 more, but didn't charge us for it. I was very impressed with this customer service even though it wasn't their fault and they didn't owe me anything for free. So I am a GC fan from here on out.
That said, my wife recently bought me an Eden WT800 from Guitar Center (used). When it showed up it was damaged and didn't work. They took it back and gave me a newer used one in better condition that was $800 more, but didn't charge us for it. I was very impressed with this customer service even though it wasn't their fault and they didn't owe me anything for free. So I am a GC fan from here on out.