Difference between Naim Nait 5 and Nait 5i?

What are the differences between these two integrateds?...esp. sonically.
Nait 5i is the newer model with the RCA input and output jacks, which the older 5 lacks. The 5 requires the use of DIN 5 pin cables. The 5 can also accomodate the optional Flat Cap power supply, which the 5i cannot.

I owned the 5i for 6 months and absolutely loved it. If I had the money, I would buy it again. I did not have the chance to A/B the 5 and 5i.
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