suggestion for best sign on bonus reward card

Quote from dealluver007 : Hello, looking for rewards credit card with good sign on bonus usingwhich i can benefit for upcoming hawaii trip in sep 2012. chase sappire preferred gives 40k bonus sign on for spending 3k in first three moths. any other good offer?

Here are some ideas:
- Gold Delta SkyMiles® Credit Card from American Express: Gives you 30,000 miles after you spend $500 on the card.
- British Airways Visa Signature Card®: Gives you 50,000 Avios (miles) after your *first purchase*
- Citi® Platinum Select® / AAdvantage® Visa Signature® Card: Gives you 30,000 miles after you spend $1000 on the card.
- Starwood Preferred Guest® Credit Card from American Express: Gives you 10,000 points after your first purchase and another 15,000 points after you spend $5000. You only need 20,000 points to get 25,000 miles with most airlines.
- Chase Sapphire Preferred Card: You've already mentioned this bonus.
- Marriott Rewards® Premier Credit Card: Gives you 50,000 points after your first use. Perhaps you're interested in hotel rewards as well as airline rewards - ?
- Southwest Airlines Rapid Rewards® Plus Credit Card: Gives you a free flight after your first purchase.

If more than one of those cards' signup bonuses work for you, then you might also want to compare them in terms of which card will pay you the most in rewards for funneling your normal spending through it (i.e. compare total reward, not just signup bonus, for spending a certain amount on each card). You can do that using this rewards calculator:
http://creditcardtuneup.com/

That calculator converts all rewards currencies (miles, points, cash) into their dollar equivalent so you can do an apples-to-apples comparison. The normal use of the calculator is to see which cards (or combos of cards) will pay you the most for a normal year of expenses. But if you just want to see which card will pay you the most in rewards for say, $1000 worth of spending, then just enter your expenses as if you're going to spend $83.34 per month (i.e. $1000 / 12 ), then it'll tell you which card will give you the greatest reward for that $1000 dollars worth of spend.