I use a UV Steriliser. Haenim. Expensive but very convenient as it helps to dry bottle and keep it sterilised before the next use. Very convenient esp if u pump too as u may need more bottles to be sterilised. Can also sterilise some other babies' things but there's a restriction on plastics tho.
I have both philips n dr brown. If u use dr brown bottles then it would be better to get their sterilizer. Honestly its drier but just take a slightly longer time i feel. N coz the bottles r tall (biggest one)