Looking for knowlegable people, please read

[shailigum]

Hey hows it goin guys...im new to the forums here and im new to windows mobile as well, just recently switched over to the mogul from the instinct and well im wayyy more satisfied with it than I ever was with my instinct.
Right now i'm running a custom ROM on my Mogul, Titanium v. something...it definately improved the usability of the device over the default OS, but still is a little laggy for my taste. Not to fear ill be getting a touch pro either tomorrow or monday so that's where my real interest currently lies.
Lemme get to my point.
Basically i'm here to introduce myself considering ill probably be spending alot of time here (and to be honest, at other forums as well) after I get my pro, and also cause I have some questions about stuff i'd like to understand. Before I ask anything i just wanna make it clear that i personally am very knowledgeable when it comes to techincal aspects of the computer world in general so I don't have too hard of a time understanding majority of things.
Now for my questions.

1. What is the difference between using the default sprint rom or a custom one? Advantages vs. disadvantages? What should I be considering in selecting a ROM for use? What's the best one? What is a 'kitchen'?

2. What is the difference between the different radios? What are the disadvantages/advantages of using different ones? What is the purpose of changing to a different radio? What's the best one?

3. Any important/useful tweaks/hacks/software I should know about to improve the usage of my device? If i'm going to be venturing into the world of 'custom ROM flashing' and 'radios' and etc, what else do I need to know? What different factors should I take into account that will affect the stability of my device?

I think I had some other things I wanted to ask but I can't remember them right now, if i think of them later i'll post.
And I understand that I could probably search and find the answer to some of these questions, but I feel that by asking them this way i'll probably get a better answer. I have a basic understanding of my above questions right now, but i'd like to have a better-than-basic understanding if you know what I mean.

Thanks in advance to anyone who responds to this, I appreciate the help.