Dermaplaning and Microdermabrasion are both really great options when looking for exfoliation. There are some differences in the procedures themselves, so choose the procedure that will have the best outcome for your skin type. Dermaplaning uses a small razor to gently rid the skin of dead skin cells. The light strokes gently remove built up cells and fine hairs that can trap oil and dirt. The end result is a refreshed glow free of fine hairs. Microdermabrasion uses a machine that buffs and polishes the skin in order to remove dead skin cells. This procedure also results in a refreshed look and after a series of treatments, it can reduce the look of wrinkles and unclog pores. You should consult your dermatologist and discuss the benefits that each procedure would have for your skin type.
I wouldn't say that either treatment is "better" than the other, but instead that each excels at treating specific concerns. Dermaplaning can get rid of peach fuzz, which microdermabrasion cannot do. However, microdermabrasion can improve skin tone and texture, including minimizing the appearance of pores and acne scars… and so can dermaplaning. The best way to see the results you hope for is to visit a board-certified dermatologist who can develop a customized treatment plan that includes the right combination of procedures to meet your particular needs.