Yes, both the box and the exterior design look different. But that OSD, whoa! That's exactly the same OSD HD Box Pro is using as well, font and all.
I've never used that Hi Box, but from the review, both Hi box and HD Box Pro do pretty much the same thing, an average quality deinterlacer + scaler/transcoder.
I can tell you a bit about HD Box Pro. I bought this per Fudoh's excellent advice, and he was right. The product itself is quite satisfactory...when it comes to 240p games that is.
I was originally thinking using this to replace my 480p/720p/1080p YUV to VGA transcoder. It does have transcoding feature, so if you say X2VGA is 'gimped' just because it only transcodes progressive signals, NOT deinterlace 480i, I can assure you, this box is DOES deinterlace 480i signals in addition to transcoding, so you can think of this box as an all-in-one solution.
However, there are a few problems.
1. ANY incoming signals will undergo through this box's video processor even if you set the output resolution to be identical as the input. (ie.480p) Of course, interlaced signals will have to go through it anyway because it needs to be deinterlaced, but the same holds true for progressive signal as well. Of course, if you were going to scale it anyhow (like LCD monitors), you would want it go through the video scaler. But for CRT owners like me, deinterlacer? welcome! transcoder? another welcome! scaler? no thanks! By transcoding YUV to RGB in the scaler's domain, it introduces slightly inferior image quality compared to direct YUV to RGB transcoder such as X2VGA. I have one of those and HD Box Pro has quite softer and blurrier image quality compared to my transcoder. It makes sense, by using a progressive scan only transcoder, the incoming signal will NOT get molested other than the colorspace conversion. (that is, YUV to RGB) The resolution will remain the same and etc. However, HD Box Pro will scale no matter what. It should be noted that it does not output in HD resolutions, just slightly higher vertically (such as 1280*768 and 1980*1200) necessitating a need for a scaler. Now, aspect ratios are kept really well, but it hardly matters when the image quality gets gimped. I tried Ridge Racer 7 and HD Box Pro's 1080P output was worse than my transcoder's 720p output. So for progressive scan games, you can still use HD Box Pro for those, but do know that dedicated progressive scan only transcoders such as X2VGA will still do a better job.
2. 480i deinterlacing is decent, but could be better. Aforementioned problem still persists with 480i deinterlacing, but to a lesser degree. Besides, I can't really ask for more because I need that scaling engine to perform deinterlacing. I tested Playstation2 games and compared to Playstation3, I found deinterlacing done by PS3 to have better color, better detail, and more stable picture. PS3 is also not perfect because it adds interpolation on default, but HD Box Pro adds blurry interpolation just as much if not...wait, it DOES add more than PS3, sigh..
However, it works great with 240p games, such as Sega Genesis, Sega Saturn, and other classic console games. One thing I hate about PS3's PS2 BC is too much weaving on 240p games. On this box, there still is weaving because the signal is still taken as 480i, not 240p as X-RGB2, but you can adjust to remove the weaving! But the price is slight picture instability. I hate weaving more than any other defects, and I'm going to use this box for action heavy games such as shmups and fighting games, so it doesn't bother me much.
If you use LCD monitor and play many input-sensitive games such as fighting games, shmups, and Guitar Hero, then I recommend this little box. I also recommend this box for classic console owners. For non timing sensitive 480i games, there are better choices such as iscan pro/ultra. For progressive scan games, (480p/720p/1080p) stick with dedicated transcoder such as X2VGA and Vdigi. But even with this box's average performance with 480i and progressive signals, this box can be better than iscan deinterlacers and X2VGA for LCD monitors just because it also comes with a decent scaler for lower price. Considering how most scalers on LCD monitors are either crap or adds massive input lag, this box can be helpful. I'm using Sony FW900 CRT monitor so I don't need a scaler.
Just know that I'm a bit picky, because I'm coming from Dreamcast VGA box. This box still is miles ahead of hundreds of other crappy so-called 'VGA boxes'. I bought this box mainly for 240p games. I will have to deal with slightly soft image quality for shorter scaling lag time.