I built this quad in order to try out the new HGLRC FD1408 (3-4S) motors. I run a 3" Diatone with freaking BUTTER Cobra 1407 4100KV's (also on HGLRC electronics), and I can confidently report that HGLRC is now putting out motors that are what I consider "the smoothest I've ever flown". That is no hyperbole. These 1408's bring much needed attention to this size that often slips through the cracks. This quad flies like a 3" with the loftiness and "carving" ability of bigger quads (typical for the wide bladed 4052 Gemfan Flash props). I used the HGLRC F428 stack on this build (I talk to HGLRC frequently; they said this is what they run their 3-4S 1408's on), and I replaced their standoffs with dampening rings. The Tattu 1400 3S's size and weight make it seem almost intended for this frame specifically (no HD). In this configuration I can keep this quad in the air for a little less than 8 minutes (!). That too is no hyperbole. I've done it many times (camera angle much more shallow for these "micro LR" sessions). Once I again I have to declare that this quad is one of those "perfect storms" where the parts are well matched amongst the several producers it represents. I should note: do not rely on Armattan's antenna solution(s). They aren't that great and all 4 of mine are sitting in a toolbox somewhere. Just mount your aerials how you like to.
If you'd like to have a quad that you can fly as easy and often as a 2-3" with the power to weight ratio and command of a 5", I think you'll enjoy a quad similar to this one. I also like that this frame can be built very flat, making it easy to carry in a case with goggles and radio. There are 5-6S versions of these motors (I think they are 2600KV(?)). If I built a quad with those I'd use the FD445 stack that is basically the HGLRC version of the Aikon F42020 - 35A stack in 45A (so yes... its VERY nice. I used one on my ARX-R and I absolutely love that 20MM set).