Which ELPH series is best in low light?

Fsi wrote:

Elph 300 and 110 both have an f 2.7 lens,both are very impressive on their budget.SD 4000 & Elph 500 are even better,has an f2.0 lens.sd 4000 can be found for around the same price occasionally.Newer Elphs aren't as good in low light.loss of detail is noticeable above iso 400 whereas the 500,300 & 110 are clean upto iso 800.The 500 is the sharpest of the 3.On a budget the 300 or 110 are your best options,500 is priced too close to the S series to make sense.