I Have Astigmatism And Trying For Contact Lens.please Help?

Hi,
I am using specs from the last 9-10 months(not continous though) for the cylindrical power (astigmatism)
sph cyl axis
R -0.50 -1.50 70
L -0.50 -1.25 100
and recently checked with an optometrist on March of 2007
I asked him that I am interested to have the contact lens since I am not comfortable using those specs. He told he could do that since my cornea is not flat and won’t be having any problem with the fitting of the lens.
He almost tried Accuvue advance for Astigmatism,Bausch and lomb , cooper vision (if iam not wrong) soft contact lens and nothing gave me 100% satisfaction since I find them convenient wearing for some time and in a sec I find everything is blurred for few secs and again normal. Mostly having problem when seeing the computer for a few mins. and when I am in the A/C while shopping in a mall or so.Do I need toseeother doct.
Please suggest.