If I had a 640, Capital One would be the last one I'd apply for! Capital One is very firm and inflexible if you ever ask for ANYTHING! With my past experience, I would just use them as a transition card but have a long term budget plan for using them to your advantage then balance transfer. This is what I am working on now - my main goal is to have the opportunity to tell them why accounts are paying off in full - their lack of customer care and unwillingness to bend! I had 3 months (out of 24) on a C.O. healthcare acct (braces) that I paid on 29th or 30th day and was told during phone pay that this would be safe from reporting as late - not the case and when researched my bank acct and phone pay days, disputed with them over and over, refused to budge. They took pmt on one day, but reported day posted. They THINK that they have us by the b...s, but will show them otherwise soon!