I've always used the XL for most stuff, but after writting the 1K book I started using the 1000 for a lot of stuff as well - still can't settle on those 1000 pads though. Getting an MPC2500 in a few days, so will no doubt start using this for most things.
I always use pads for drum parts and have a cheap Evolution midi controller to play multisample programs in my MPC - stuff like piano doesn't really sound too natural when played on the pads (IMO).
If anyone has any questions about our new ebook, please feel free to ask me on these forums and I'll be happy to assist.
On the product page you'll find links to a free example tutorial from the book (Sequencing Tricks Part 2) in which I explain how to create 'fake' turntable stops and...
It's great for quick effect processing - theres no cables, no plugs, no patchbays and all your settings are saved with your songs. The effects are average, but as with anything like this, it's how you use it that matters.