not sure what the op would expect posting a question like that on the very forum for the product he is thinking of moving to, not really going to get a very objective answer here, you might say that the sample group could be just a wee bit biased, the jury pool a little tainted. but the best advice that has been given here is to get yourself the demo and really give it a work out, make sure it suits you and what you want to do, also do yourself a great favor and also do the same with some competing products, give at least a couple a good and even try out. if it turns out sonar is what suits you that is all well and good, it is capable of getting the job done, although it is not my first or second choice, and would come in about forth on my recommendation list.
most important thing, don't worry about others opinions (
remember what clint eastwood said about opinions) the only opinion that matters is your own, so give at least a couple of products a good honest demo and pick the one (or 2, or 3) that works best for you, works best on your hardware, the one which you you feel more comfortable with, don't just demo one product, try at least a couple.