Jon Petty wrote:

> What kind of solid state switches are there that don't have a voltage
> drop.

  None really.

> I have never used bus drivers would something like that work?

  "Bus drivers" are singularly heavy-duty *digital* inverters/ buffers.
Not analog.

  I think the 74HC4066 has a substantially lower Ron and other better
characteristics than the older 4066, and works on 0 to 5V beautifully,
if not a wider range depending perhaps on brand.  I suggest this as it
should be more readily available and cheaper than the other dedicated
parts.
--
  Cheers,
        Paul B.