Travelling for business, I would say that SPG American Express (if your business is paying for the annual fee) or aeroplan (again hopefully they are paying for the annual fee). I think you get the highest reward return compared to the others.
Two popular cards for accumulating air miles are Credit One and Chase Sapphire. I suggest visiting this site to determine which of the two is best suited for your needs http://www.creditcards.com/airline-miles.php.
The best credit card for obtaining airline miles will be dependent on which airline you prefer. Venture Reward by Capitol One is rated as the top credit card for airline miles currently.
The best credit card to apply for is the one that is affiliated with your favorite airline. For instance, you can get a Delta SkyMiles Visa card which partners with the miles you accrue to earn you great deals.
It really depends on what airline do you go to and what ticket website do you use. Some of the websites that offers the best business tickets are orbitz.com and travelocity.com
Visa is best for business travel expenses. The rewards are great, and they have great customer service. Visa has an outstanding track record of integrity that is unmatched by any other major credit firm.
The company that seem to offer the best airline credit reward system is the Miles by Discover Card. They have no annual fees and give you reward point for travel, restaurants and selected merchants. So you can earn points even when you're not traveling.
The airline offers a best price guarantee policy for its tickets, ensuring that customers receive the lowest available price. If a lower price is found within a certain timeframe, the airline will refund the difference or provide a credit for future travel.
If you are worried about credit cards you should use the option and take into consideration purchasing traveler checks or using money orders for travel purposes.
When looking for travel insurance for you business, be sure to check the company's travel insurance ratings. You need to be sure that you are completely covered on every aspect of travel, including airline, rental cars and hotel rooms. You will need to make sure that the company you choose has a good customer satisfaction rating, as well as adequate coverage in case of an emergency. Business travel plans can change day by day, so you will need to find a company that will reimburse your business if you have to cancel airline or hotel reservations.
Try shopping around at various travel sites, they'll all probably have different deals that you can take advantage of on business class travel. Try starting with sites like this one that list many options for travel and accommodations: http://www.onetravel.com/travel/business-class-fares.asp.
The best airline credit card is the Capital One Venture Rewards Credit Card. It has the highest miles-to-money-spent ratio out of all the airline credit cards. Its miles can also be used for most airlines.
The Piel Computer Bag is great for travel.