I own both the Hadzic and the Atlas of Ultrasound- and Nerve Stimulation-Guided Regional Anesthesia books (the author of this is actually Tsui, not Chan). Both are EXCELLENT.
I personally prefer the Tsui book-easy to read, well-organized, nice U/S images-but you could read EITHER cover to cover and be very well informed about all common regional anesthesia techniques as well as intermediate to advanced techniques.
I don't think the intricacies of catheter placement are covered well in either book--you might want to check out an ASRA weekend course for the how to's of catheters.