Ideally you want a foot that looks like this with a very small hole where the needle goes down, to maximise the pressure onto the fabric. Just don't move the stitch setting to anything that swings the needle or you'll smash the needle onto the foot and risk damaging the machine.
But unless you are having issues with the fabric being pulled down into the feed dogs, the regular clear sewing foot should be fine for most work and is certainly easier to see what you are sewing.
A lot of quilters go for a 1/4" foot too which gives you consistent 1/4" seam widths when piecing quilts. There is a excellent website on sewing machine feet and their different purposes, link is
http://sewmamasew.com/blog2/2009/06/feet-feet-feet/ and she has great images of 1/4" foot in use along with others such as Open Toed or Roller foot.
If you are shopping for different machine feet, you may like to look at
www.sewingpartsonline.com, great website with lots of different brands. Your machine would be classified as a "low Shank" machine I think; often you can buy a generic brand foot which will work on different brand machines once you are sure of the shank type.
Most sewers find that there will be one foot they prefer to use for much of their work depending on their projects. My all time fav is the Elna Teflon foot, a black teflon coated foot which works great on many different fabrics; I've worn the black off the bottom of two of them!!