I think perhaps peoples opinions vary depending on the quality of service they have recieved. As IO540 says "15 planes in your area" is hardly helpfull
However "trafic 12 oclock position reciprocal heading showing similar height"
may just be very helpfull, especially on a murky day, flying into the sun
I have to say the FIS & RIS from linton on ouse, waddington and humberside are excelent Thankyou to anyone from those places for a superb job.