The best replacement for p900 is p910.

The best alternatives to p900 are rated as following:
★★★★★  p910
★★★★  p910i
★★★  p800
★★★  p900i
★★  e680
★★  a1000
★  sony ericsson p910i

Your alternative for p900 is not listed? Suggest!
Speaking about p900, one probably shouldn't forget about p910.

Other search terms related to p900 and their ratings are:
★★★★★ p910
You have in mind a companion for p900 and it is not yet here? Propose!



Google Trends

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p900
p910
p910i