Well, It arrived 2 days ago. I've just been too stoked to write a review.
The first thing I'd like to point out is that its name is not IR4 as the previous person thought. As it says on the box it came in, its just Angel 4. Now on to the review.
Looks: Personally, I think the Angel 4 is the best looking Angel yet. I love the graceful lines of its milling. A nice and pretty sweeping shape. And the Polished Denim Blue looks great!
Body: Compared to my 2k CnC LCD, the Angel 4 is tiny. They have completely reworked it. I don't own an IR3 or Speed, so I can't make a size comparison with them. The Angel 4 is almost an inch shorter length-wise than my LCD, and is a little less than half an inch shorter height-wise. (Body only comparison. No feed-neck, trigger frame, etc.) Being so much smaller, the Angel 4 is noticebly lighter than my LCD.
Performance: After messing with the trigger for about an hour, I finally got it set up the way I like it. The trigger has a tad bit of side to side slop. I'm okay with that, but I don't prefer it that way. The Vernier trigger adjusters make setting up the trigger a total snap. After gassing her up, i shot about half a case into a tree at my house. This baby totally rips. Also, with the same barrel I have a tighter shot grouping with the Angel 4 than my LCD. Probably the input pressure, but I'll work on that later. Sensi works beautifully. My friend has an ACEd 2k2 LCD, and its cool... But the Angel 4's Sensi is cooler. The delay makes it possible to chop, but that wasn't a problem, cause my Eggo2 was feeding its hungry user. Also, its not as loud as my LCD.
Some people would say that its too pricey for an upgraded Speed. But I totally don't see it like that. I've shot a couple speeds, and I have totally fallen for the Angel 4. And with all the neato features (granted some of them are pointless) its worth the price.
Features: Two words! trigger offset! Coolest feature besides Vernier trigger adjustments and Sensi. Its the Angel 4's form of debounce, and it works great! With 20 levels of offset, you can set it exactly how you want it. Another neato feature is the multiple alarms. I have it set to go off with one minute left on the timer, and at the end of the timer. And you can tell that they are different. The "One Minute Warning" is a slower rythm than the Final one. The End alarm is really quick thumping.
Other than that, it has the pretty standard stuff. IR transmission for settings and such, Space frame (i've been wanting one since the IR3 first came out). If you can afford the $1361 shipping included price tag from Mos, Totally get this!
I don't think I could have asked for anything more from WDP. The Angel 4 is phenomenal. I will definitely recommend this to anyway. Try it out, Buy it, set it up how you want it, and rip strings all day long!