Steel or glass electric kettle?

After reading through a couple of threads about electric kettles, I am still unsure as to which brand to buy. I have an aversion to plastic touching my food. I notice that some of the ones I've seen have what I think is silicone or plastic sealant. Do silicone emit anything into the water (or whatever that mystery sealant is.)

I want a high quality electric kettle and cannot decide between glass or stainless steel. I've seen the Cuisinart stainless steel electric kette, the Salton glass electric kettle and mentions of the Krups brand.

I've even considered those eternal hot water dispenser that are seen in many Asian homes but all of them have "sticky outy" elements in them.

I want a clean-lined interior with no visible heating element inside.

Can someone suggest a brand that they have used for a good length of time with little trouble?

Glass or steel?