I have yet to see a single one that can decrypt SSL. I tried. A lot.
The only way to 'decrypt' is to force your own cert, which must be trusted on the devices (WPAD or manually) before it can actually do it without a browser throwing a fit. Unfortunately, once you have a mobile device enter, they tend to throw all kinds of hissy fits.
If I am wrong in assuming there is not a router that can actually decrypt ssl, then please, inform me. Because I looked for ages and even attempted to figure it out on my own. SSL is NOT perfect, but it does have a decent chain of trust.