Sephora strengths- they have more than 750 and more stores in 17 countries. They have a private label and is good at branding and marketing exercise.
Sephora weakness- it is hard to read their website and their products are pretty pricey.
Sephora opportunities- the customers are ready to pay high price for high quality products. They are emerging economy by suiting with the environment.
Sephora threats- Many people want many different types of a certain products, and is hard to get all. They are very selective in brand, quality and service.
MAC Cosmetics strengths- good advertising. They have 200 and more locations in 15 countries. Offer high quality products. Makeup artists that use MAC products spread the products and company's name with words of endorsement.
MAC Cosmetics weakness- their product launch created problem.
MAC Cosmetics opportunities- They have a lot of information on their website (about their product) and it is easy to view. They sell their products through other websites too.
MAC Cosmetics threats- They sell other products to their competitor company.
Overall, I would choose Sephora because this company has a variety of products which attracts many customers. In addition they have more stores internationally, so they have a good market.