I run a 128GB 830 on my late 2009 macbook. Have been for about 4 months now and went from lion to mountain lion on it. Haven't noticed any performance loss and its been really great. I too will not use the trim hack. About once a month, I leave it sit at the login screen idling for an hour or so since the 830's GC isnt as agressive as sandforce.
I chose the 830 due to Apple using them as the OEM drives in their products and their reliability ratings. Glad you haven't had any issues with the Vertex. I wouldn't touch OCZ with a ten foot pole.
Why are you looking at switching if you havent had any issues with the Vertex? Performance wont be much different on the 830.