[RAZR HD General] idless:
I agree concerning the launcher! I also have Nova Launcher install and do not experience lag at all. Although not really necessary it seems to me that Nova is even smoother with "wallpaper scrolling" disabled (regardless of wallpaper being static or live).

I think the lag some people experience generally has to do with widgets and content being updated (not least Motorola’s quick-settings which almost seem to act like a "locked permanent widget").

This is pure speculation but I suspect that Motorola (wisely) has chosen NOT to let widget update constantly when not visible on the screen. I think they did this to prevent waste of battery on "invisible actions" by the widgets. However, the cost of this is a fraction of a second needed to update the widget content whenever it appears on screen again.

I very rarely experience lag and it is of absolutely no significance to me. However, when I occasionally do experience a tiny bit on the home screen it is always when I move to a widget that has not been visible for while. I only have a few calendar apps (pure agenda + pure grid calendar) and this may contribute to the smoothness on my phone).

I think people who are obsessed with fluidity should move to Iphone! Then you get ultra smooth operation admittedly far superior to Razr HD and android in general. Why? Because Iphone is much more simple (and much boring) with no custom content or widgets to update. It is quicker because much less is going on. Like so many other cases this is an example of trade-offs. Conclusion: Pick your choice between customizability and fluidity (Android or Iphone). Though, satisfactory fluidity should easily be attainable by simple keeping a limited number of widgets and/or minor tweaks like the above. Btw. shoutcuts and apps on the homescreen (like Iphone only does) are perfectly fine for perfect smoothness, at least on my phone.

As for 1gb vs. 2gb: I do not think 2gb really matters presently. When I check “running apps” in settings there are a lot of cached and even running apps loaded into the memory that I do not need to have loaded (games I do not play, facebook etc.). 2gb ram would just allow for more “unnecessary apps” to be loaded into the memory. Like several other smartphone specs (camera megapixel for one) at this moment RAM is an (almost purely) marketing/business driven feature rather than an “engineering/useable” and rational feature: There has to be constantly improved specs for consumers to keep buying new phones whether these are rational and needed or not. Point being: At some point 2gb. will properly be the norm or maybe even necessary. Not because more ram is really necessary from an engineering/software point of view but the decision to move towards more ram demanding software and apps is very wise business decision. Why else should we “upgrade” our phones? Though I am no software expert, I think even now it is hard to justify higher ram requirements to run your average tea-timer app and what not (and even games for that matter). If display resolution is suddenly moved toward +2000 pixels screens or something totally silly like that (but actually possible) 2gb or more will quickly become a “forced necessity”.

Forgive the length of the post and my slight rambling at the end (even if I am right in my observations of cause)...