Thompson's book is best if you need to start from scratch with your spiritual life, or are looking to overhaul things for a fresh start. She's accessible, draws from a wide range of sources, and comprehensive.
A classic work. Foster's work has a little harder edge to it and is not for the faint of heart. He's like a really tough personal trainer who gets in your face. But for those who persevere it will reap rewards.
This work points to how these traditional practices can renew a congregation. With a bit more political point of view, she integrates well the inner and outer aspects of Christian practice.
Carter is the former pastor down the road at Providence UMC, and now the bishop of the Florida Conference. Carter has a talent for making things clear. This book is the best at articulating a specifically Wesleyan approach to spirituality.