Hi Judy and welcome to CS!
Youve certainly had a good run from your Cafe Roma and either the SB or Gaggia will be a good step up. They are however very different to each other. The SB uses a thermoblock, whereby water passes through a heating element, while the Gaggia has a dual purpose boiler. The SB is probably simpler to use, while the Gaggia requires a greater degree of interaction between the machine and the user.
In regards to your concern about longevity, well, I could pretty much guarantee that the Sunbeam will not make it to 10 years - theyre just not designed or built to last anywhere near that long. On the other hand, with regular maintenance, theres no reason why the Gaggia wont still be producing good coffee in 10 years time.
For the grinder, the 480 will do ok, though if you can stretch your budget, a better grinder will be a worthwhile investment. Talk Coffee (Sponsor on the left) have the Ascaso i-mini on special at the moment for $300, and its a very good grinder at that price point.