There are tons of image editing programs available in the market. They differ in features and, thus, their price. Here is a little piece of advice: take a good look at the features offered by an image editor and understand if it suits your requirements. For example, if your work mainly involves touch up to photographs, a vector based image editor will be of little use (if at all). Graphics tools from the following companies are briefly evaluated:

• Adobe
• Corel
• Macromedia
• Jasc
• Ulead
• Xara
• iPix
• The GIMP

As a marketer try to use your logo in a variety in a variety of communications. So here is some tips for designers : give the logo to your customers in a variety of formats for online, offline and print uses. If it is a colour logo give the customers an all white version, all back and the same if these but with a clear back ground so it can be easily included in marcoms.  Logo Designs should be simple and memorable .