Hi Mrs h, The best on offer is the virgin mastercard , its got a 6 month purchases and 16 month balance transfer!!! on 0%. with a 3% fee for the transfer which is about the same on all cards
If the application was declined it shouldnt "go against you" as a lender cannot see a decision from another lender on an application, only your existing credit history on your credit file (if that makes sense). The only thing is that if you make alot of applications in a short space of time, it can influence lenders as a record of each search is left on your credit file, but from what you've said you should be fine for the virgin card. hope this helps and good luck