Before you decide on either the Sonicare Elite 7500 or a Braun Oral-B toothbrush, you need to understand that both of these sets of brushes are electric. While Braun does make a wide variety of different manual brushes, only their high end electric brushes can match with the Elite line. As these are both electric, you will find yourself choosing between which modular toothbrush works the best for you.
The first consideration you need to make when selecting between the Sonicare Elite 7500 or a Braun Oral-B toothbrush is whether or not each of the brushes have the replacement heads that you prefer. As finding a good brush head for your electric toothbrush is a requirement, you need to make certain that you can replace the standard heads with ones that you are comfortable with. Second, you will need to make certain that the brush is comfortable for you to use.
For example, while a Conair Interplak toothbrush may meet up with any other line, it is more comfortable for some, than for others. Selecting between these two models should be done on a comfort basis. Comfort is an essential part of being able to maintain good dental hygiene practices. If you use your common sense and select the brush that is most comfortable for you, you should be able to make the best purchase possible.