Is Pixelmator any good for making textures?


I´m just about to enter this 3D world and Blender was an easy choice, being free and all, but also the number of tutorials is helping a lot.
Many tutorials is using Photoshop for textures, but I really can’t afford it at the moment and I´m considering other alternatives, I´ve tried GIMP for some time but it feels slow to use, I´ve had some troubles following some tutorials because features is missing etc.
I´m on a mac, so alternatives isn´t many, but I can afford Pixelmator, but before putting the money on the table, I wonder if anyone have any experience with it? Is it good for making textures or is it missing a lot of features that Photoshop has?