I know, as my late husband and partner used to sell logo designs to help supplement our income back in the lean days (can you pronounce "Starving Student?") I used to help him. It was fun, but grueling. The neatest thing was seeing people get good results because of the graphics we produced.
A good logo really helps a business stand out. Of course, it cannot replace good products and great service, but it gives you a foot in the door, so to speak.
Finding a good logo design company got easier when the internet expanded as now people can get a pretty good idea of what kind of work different artists can offer without having to run all over the place and waste time looking at physical portfolios. If the logo company can make an attractive web page for themselves, you know they can make you a logo that will stand out. Of course the nice thing about shopping online is that it is so easy to compare the different vendor pages. One thing to look for when shopping for a design company is their guarantee. Related to that issue is how many changes the company is willing to make if you are not happy with their design.
Ordering a professional logo online is easy and convenience these days and not only can you get help with your design, but many of the logo design companies also include letterhead and business cards in their online pricing.