need credit card which will maximize rewards for 20 nights in a hilton hotel

I am planning on taking a trip and will be staying at hilton hotels, primarily hampton inn and doubletree

any special credit offers currently going on which will allow me to maximize the rewards? i plan on staying atleast 20 nights within the next 2 months in a hilton hotel

thanks

Well, the obvious choice would be the Hilton HHonors credit card - I think they give you 50k points just to sign up (which gets you ~2 free nights at their mid-teir hotels)

the hiltonhonors card via citibank is terrible,
"40,000 HHonors Bonus Points after $1,000 spent on purchases within the first 4 months" and the 40,000 points is good enough for ONLY 1 night at a category 6 hotel

i wish there was a better card out there
"Earn 6 HHonors Bonus Points for every $1 spent on hotel stays within the Hilton Worldwide portfolio2"
That means if I stay at Hampton Inn [category 6 hotel] for 20nights straight at $125 per night that means i would have earned 15,000 HH points which isn't enough for even 1 free night at Hampton Inn