It find it OK, but it all depends on what you think of the pen. The Huion pen tip is a bit springier and softer that the Wacom one and of course there's no eraser, but I never used it. My one rattles a little if you shake it, but it is only the pen tip, nothing inside is broken. In fact the pen is very comfortable. The one I have is very lightweight since it has an internal rechargeable battery, so it is not back heavy if it had an AAA battery and I think it's slimmer than the Intuos4 Grip Pen (I don't own an Intuos4 anymore) which is a bonus for me as I hated how wide it was. The pen also turns itself off when not in use saving battery power. Just tap it on the tablet to get it going again (I think a button press will work too).
EDIT: Pen wakes up instantly when near the tablet. Just never noticed. I also have a Motion Computing pen that works with Wacom technology and it has a definite rattle though it still works. Just just to show you even the branded stuff can not be perfect!
But for some reason it is very responsive, you can do very fine lines with the Huion with ease. It really does sense very light pressure. Its technology is based on the UC-Logic ones, so if you've read the reviews about how good the "Monoprice branded" tablets are, you can't go far wrong for the price. Some people say that the tablet's build is a bit crappy, but I don't really find anything wrong with it. Everything is neatly finished and there's no creaking when you press down on it. I think it's because it's so light. A heavier tablet isn't always better, especially if you're holding it like a sketchpad in your arm (which is how I'd like to use it). The only thing that may annoy is that the mini USB connector is on the left side of the tablet only (there's no right hand one so you can switch depending on your setup or handedness). This is annoying for me as my PC is on my right side of my desk. This will change in the future when I build a new mini-ITX system I'd actually be able to pop anywhere on my desktop.
Unfortunately I don't know anything about the jitters yet as I don't have a LCD panel to put on it as I'm still searching for a good one (needs to be 16:10 ratio) and a compatible controller, but I have heard rumours that battery powered tablets can help with jitter issues simply because the pen is running under its own power and doesn't have to rely on the tablet like battery-free ones do. It also helps with the reading height as well. The best thing to do is give it a try. There are super cheap ones on eBay, but maybe it would be best for you to buy it directly from Amazon so you can return it if you don't like it. I bought mine directly from Huion and they catered to my needs (I wanted a white tablet with a white pen holder and black pen nibs, the rechargeable pen only comes in black). If you do like it, grab the rechargeable pen from Huion if you want a lighter, better built pen. It's only $20 and uses the same nibs as the other pens.
The tablet has an interesting option that made me think at first that it was faulty. In the driver settings was an option to enable "support PC tablet". This was on by default and for me it prevented the tablet from working in anything but a graphics program. The moment I opened Sketchbook pro, bam, it worked. When I closed it, all I could use was the mouse. If you disable the option, it works like the Wacoms (as in all the time). It might be useful for some people. Usually disabling the pen tablet options in Windows improves the way responsiveness of the tablet (this is universal and it doesn't matter which brand you have), so that could be the reason mine just stopped with PC tablet mode was enabled. Hopefully, I'll find a decent screen soon and will be able to fill you in more on the jitter front.
But here is a video where someone used a UC-Logic based tablet to build a DIY cintiq. It looks like it doesn't lag like some I've seen and that could be due to the battery in the pen...http://www.youtube.com/watch?v=s7TkvIuC6Oo
Hope this helps!