After researching a few gravel/cross/adventure bikes I ended up buying a Haanjo Trail. I bought the bike to be my all around do anything bike reducing my total bike to 1. I know n+1 is popular around here but living in a apartment with wife and daughter with no garage or storage space having multiple bikes just isn't an option for me anymore. I will ride 90% on road but there are some places I ride where you can go off onto hard pack dirt for a couple of miles or fire roads so I wanted to take advantage of those. My other bikes have been aggressive geometry race bikes on the smaller end of my fit spectrum and as I'm almost 40 and don't race I decided that I wanted to try something more comfortable. I ultimately ended up with the Haanjo because I got a great deal and was able to get Ultegra with hydraulic discs for the same price as other 105 or lower mechnical disc bikes I was looking at. I considered building since I have built several bikes but never having dealt with hydraulics I decided I would rather buy complete since that was one of my requirements.
I purchased the bike online and did a lot of research on sizing. I am technically between M/54 and L/56 by DB's fit chart. I am 5'10.5" and have usually ridden 54 road bikes with 545-550mm top tube. I read as many reviews as I could on Haanjo and a lot of them were people around my height and it seemed everyone that got a 56 wish they got 54 and vice versa. I ultimately decided to go bigger and get 56. My other current road bike had a 545mm top tube and 73 degree head tube and always felt a hair too short, mostly like I wanted to move the saddle further back than possible. I was worried the 54 Haanjo with 540mm top tube and 70 degree head tube would be way too cramped. Since the 56 still has a slack 71 degree head tube I figured that would shorten the reach to feel more like a 55cm. Well, I was correct. I had to swap the 90mm stock stem to a 110mm stem to be stretched out enough for my liking.
In the stock form the bike was pretty heavy (compared to my other bikes) Over 22lb for 56. That combined with 40mm cross tires and slacker geometry made the bike feel very sluggish on road compared to my previous road bikes. I have since put some light 700x28 road tires on , swapped the bars for narrower lighter compact drop, put on carbon post and light saddle and got down to 20 lbs and the bike feels down right snappy on road and climbing is much easier.
6800 Ultegra shifts and performs flawlessly. The hydraulic brifters are noticeably chunkier than the mechanical 6800 brifters but they are still comfortable. Braking power and modulation is everything I hoped for. Descending at 35-40 mph I can easily control my speed using two fingers with my hands on the hoods which I could never do with caliper brakes. The cranks are 46/36 FSA Gossamer Pro. They look a lot nicer than other FSA cranks in my opinion with a 4 arm spider design. They feel plenty stiff and are actually lighter than Ultegra cranks based on published specs. I may replace with compact cranks or swap the rings but so far I don't miss the 50 tooth unless descending where I may spin out sooner. I do a lot of climbing but the 36 tooth chain ring paired with 32 tooth cassette is as good as 34/28 combo I'm used to. The frame is stiff but still comfortable in my opinion. I don't feel much road buzz and actually it is better with the 700x28 road slicks at 65-70 psi than with the stock 700x40 semi knobby tires. The frame does have huge welds which some people don't like but the polished finish and graphics look great and you get a full carbon fork in this trim. The wheels are beasts that weigh about 2200 grams by my scale and I will probably replace them eventually and drop another 1 lb from the bike but I am perfectly happy with the current set up.
I have been off road twice. Once on some more technical trails with a lot of climbing and it is not a mountain bike! There were parts I just couldn't pass even with 40mm tires and had to get off and walk but for "gravel" and flatter off road it's great. All in all I'm very satisfied especially considering the value they give you.