Yamaha DTXpress/DTXplorer/DTXtreme

I had a chance to test DTXtreme and DTXpress side by side. Granted; 
Xtreme has a lot of bells and whistles, however being a classic & 
hard rock drummer, only a few applies to me, therefore making it hard 
to justify the price difference. I listed the advantages (that apply 
to me) of DTXtreme below, and since there was no manual around I 
wonder if DTXpress in a way is doing the same.

Less important features:
1) Xtreme is a hell lot easier to edit than Xpress.
2) Xtreme has Lots of inputs, but only one - snare - has positional 
sensing. Positional sensing "is" a good thing but I can live without 
it (price beats this advantage).
3) Xtreme has real feeling albeit noisy pads - they can be changed to 
mesh-heads though. DTXpress cannot accept a real-head pad (rimshot 
will not work). However there are other options for a good snare on 
Xpress.

More important features:
4) Xtreme has the ability to set so-called "poly" mode so that cymbal 
rolls sound more real. This is really a neat feature and I don't know 
if this is possible on Xpress.
5) Xtreme has the ability to "tune" sounds - so that you can get that 
thight dream snare sound. Again a neat feature.
6) Ability to adjust attack-decay times - especially good on hi-hat 
to get thicker/thinner sounds. Neat again.

Well at the end, if DTXpress somehow has the features (4), (5) and 
(6) above I will definitely buy it. For (1), I am good with synths 
and MIDI; for (2), thinking that Chris Layton only used 1 snare 2 
toms and 3 cymbals on SRV - Live at El Mocambo video I think what 
Xpress offers is enough (from a rock drummer's perspective) and for 
(3), well you can't have everything.

I found the sounds themselves very similar on both modules (I would 
only use 3 or 4 sets normally).

This is where you, long time Xpress players come in. Can you please 
comment on those features and whether they exist on Xpress?

Thanks