BeInSync looks to be most similar to Sharpcast's SugarSync product in terms of functionality. Sharpcast has support for Mobile devices, while BeInSync does not. BeInSync may only work on Windows (no Mac) in fact. BeInSync charges $39.95 for 50GB of storage per year, while SugarSync charges $199.99 for 60GB of storage per year. BeInSync certainly has the more attractive price!
I must admit that I don't fully get why Phoenix Technologies was interested, except that Woody Hobbs, current President/CEO and previous President/CEO of IntelliSync, clearly knows what he's looking for.
And, the $25M price tag can't be sitting well with the Sharpcast folks, since they've already taken down $16.5M in VC money. Sharpcast would need a significantly higher exit for an acquisition to make financial sense.