No worries about the rant, every os has its shortcomings

Now with that said, I myself just went back to using Opera Mobile as my main browser for the same reason, PIE/Pocket-Internet-Explorer is a mobile browser that is temperamental to say the least, it sometimes will not open pages, freezes, or just crashes.
SO Opera Mobile saves a lot of lost hair over it, try it.
If your still running the stock ROM, I am not surprised of your frustration being compounded, the original stock rom is a nightmare, LG did us no favors with it by any means. Though the ROMS on our forums alleviate a lot of the issues with it, if your willing to install it an reload everything you have back on the phone.
It comes with some of its own quirks too, but far far less then the one that comes with the phone, one of the bonuses being a highly improved touch sensitivity. Though if you actually like LG's Idles, flashing a new ROM is not for you, as it is the corner stone of the majority of the problems an has been weeded out to the best of Darks abilities, an rightfully so. POS skins are no more on the new WP7, MS has made sure to stop that crap being over-layed on it's OS.
Freezing while using Wifi an PIE is still common on newer ROMS, though using Opera mobile, its a damn pleasure over the latter and freezing is a thing of the past..Just don't let it go into sleep mode with Wifi on, or expect a slightly long delay while it re-establishes itself as it shuts down Wifi when in sleep mode.
I myself have been wanting to throw my LG IQ under a bus at times indeed, but I cool down an realize just how much I prefer it to anything else out there an smile again.It's LG that makes me angry, very very poor support.
I am not dumping WM anytime soon, I will buy a WP7 phone when it's available here an will more then likely buy the LG Optimus as from reviews it's one of the best made out of the batch of new WP7 phones, surprisingly.
As well as, LG will not have a hand in its future updates, they are being controlled by MS themselves an not left to the manufacturers anymore, thank Christ.
From the reviews I have read on it, WP7 is being touted as Rock-Solid in its approach and the LG phone itself as sturdy with good specifications, so once it's released an passes with no flaws in my tests, there's no need for LG from that point onward, just MS as it should be.
Though with that mentioned, I will be keeping my LG IQ for along time yet, its features are not present in anything else out there yet an it's like an old friend, quirks an all that make it what it is.
So, either grab Opera-mobile an go, or read up on Darks Dragonstorm ROM an flash it, an use the Tweaker app still, and your doing as best as can be expected, an as well as the rest of us that have already.
You will have to re-install everything as expected from flashing a new ROM, you can use Microsofts Myphone service to back up your contacts an documents online then restore it after flashing. DO not try to use a back up(Like SPB or Sprite Back up utility) from one ROM on another ROM, their not the same os makings an you will have issues. Copy cab files etc to your storage card before, for faster re-installs an safe keeping.
Hope this long post helps some...

Peace
WR