The Sanyo 4920 is the most similar replacement option but I hear that a
new 4930 is coming soon.  Even so I don't think these have quite the
same quality as the older 4700/4900 series.

My mm-7400 gets great reception.  Much better than my last 3 Sprint phones.

Allot also depends on where you are workign out of. What homeport are
you based out of?

I just got my mm-8300, and it has better reception then my past two
phones....

I've never seen anyone post anything other than subjective comments, such as
".....my new xxxxx has great reception", or " this xxxx is way better than
my last phone".
I wonder why some company like Sanyo doesn't set up a test room on an
island, or in the desert to see exactly which of their phones actually are
better at holding a call, and how they stack up against the competition.
Meaningful and reliable test results would result in a bonanza of sales for
the winning phones, since many people consider their reception a top
priority; more important than camera or online features.
My guess, judging from postings on these boards, is that there is quite a
bit of variability between phones, even of the same model.  The companies
don't make money by making the phone reception work well, since any given
model isn't out on the market long enough to develop a reputation, and the
companies are pushing those features like vision and multi-media that make
them extra money in subscriptions.
Maybe someone on here knows about the rusults of a shootout.