I have a lot of experience with Trazodone having experienced some bad insomnia over the past year.
It can be very effective for sleep and "deep" sleep.
I find 25 mg does very little - for me - in terms of sedation; I need at least 50 mg minimally and every addition 25 mg further helps sedation as I have been as high as 150 mg, but found too many side effects once I went past 100 mg.
However, I find Trazodone increases my anxiety and this has been the case eery time I go on it. I've had four (and almost five) panic attacks in my life and each time it was on Trazodone. When I am not taking it, my overall anxiety drops significantly. It sucks as it works really well for sleep for me, but I have been sleeping much better lately and not even taking anything for it.