Don't worry yourself mate, I didn't think you were belittling anything at all. It's just that I know that the idea of vipassana sounds really simple and obvious, and it is, but when you put it into practice you begin to see how transient and, at first, imperceptible bare sensation really is. There's only so much you can say about it, experience will demonstrate more than words can express.
In my own practice, an ideal setup would be getting to 4th jhana, equanimous and spacious, and noting from there. That's just my own ideal, real-life varies and the majority of my meditations begin with establishing access concentration and into 1st jhana before vipassana begins. Establishing mindfulness before you sit down to meditate is something I now consider essential to good practice, tarin greco gave me that advice when I started on here and every day I see it proven true, I'm sure Claudiu would agree.
The apparent conflicts between vipassana and samatha, insight and concentration, become complimentary once you get into it. I know what you mean though, one thing to remember though is that concentration, according to my own understanding, experience based on practice and the words of those more experienced than myself, doesn't lead to fundamental insight into the three characteristics. Vipassana shows you how solidity is an illusion built up from sensations being observed by another sensation we've learned to call "I", it's easy to conceptualize and philosophize about it but this technique, along with the practice of morality and concentration, allows the direct experience of "it", which isn't an it. Or a not. Or a thing, for that matter.

Benefit from jhana practice? Good show! Note "benefits" and what sensations those are made up of, what's experiencing these sensations, what the hell's going on here, who are you and why are you calling me?!?

What is generally used as insight practice for jhana practitioners?
Can you maybe phrase that slightly differently?
From what you've said I'd suggest this, which is just an opinion and may be totally wrong so I stand to be corrected: You can practice jhana. You can practice insight. You can practice insight in jhana, but not jhana in insight.
Basically insight means nothing gets solidified, it's there, it's gone, that's it. Insight moves in cycles, in stages, it doesn't stop. Samatha means concentration getting solidified and becoming a state, it remains static but can be examined and seen as being temporary, unsatisfying, and not self, and so it is noted as bare sensations which is.....drum roll.....insight practice!
So you can practice concentration and then apply insight, break it down and see it as it is. Beyond 4th jhana this becomes slightly different as there's an element of noting, kinda like keeping a balloon in the air is how it "feels" to me, involved from that point but that's a different story. Again, I stand to be corrected as this is just me rattling my gums.
sorry for my many questions I'm very new
If I find you apologizing for asking questions again, or for being new, I will hunt you down and repeatedly kick you in the scrotum.

Don't worry about it, you'll see that this is one of the most practical, helpful and honest communities, Dharma or otherwise, that you'll ever come across. I like helping in whatever way I can according to my current abilities, I'm no expert and would always encourage you to explore these things further, through research,
asking questions, and practice as multiple opinions will be more useful than one persons interpretation.
Apologies if my previous response came off as being in any way aggressive or standoffish, I was just joking about you saying that noting seemed pointless 'cause you'll quickly see why it's so useful and how effective something so incredibly simple can be, but how bizarrely complex you can end up making it for yourself by over-thinking. Really, it's incredible the stunts that the self will pull to cling on to some "thing" so just stay with whatever happens and don't get caught up in what's going on "in" thoughts, the content, the little movies, loops and slide-shows.
Anyway, keep us posted on what's happening and keep asking questions if you have them, you'll probably find many have been asked already so check the search function too. There's a Doc Martin boot with your name on it here... ; )