I have used Radiesse and am very satisfied with the results. I have found that it last the longest and works to build your own collagen. There are certain fillers that due to their viscosity are better used in one area than another (ie. under eye cannot take anything really heavy) With radiuses the results are immediate and after the injection your PS can smooth the results so that you do not get bumps. Also, do not take aspirin, etc before as it will increase your chance of bruising - some people do bruise and others (me) don't. do your homework and google juvederm before/after pics and read up on it.
good luck!