With only 7 months credit history the companies are not likely to give you high limits. I would wait until you credit history is 1 year and you have no credit inquiries for six months and then apply for a new card from a new bank. You said that you have applied for a number of cards "that you can actually use". Have you considered that most premier cards have minimum credit limits of $5,000, and thus out of your range for a few more years. Next time you apply make sure that the card doesn't have minimum limits. This rules out most affinity cards that typically are Visa Signature or Matercard World cards, e.g., United Explorer, etc. As your second card I would recommend cards such as Chase Freedom or the Amex blue family, and remember you want to keep these cards long term, so make sure there are no fees for maintaining them. With your credit history and income I would not apply for the big cards until your credit history is at least two or three years old.