Just leaning into the tailslide is sick looking.
Good stuff.

With the right programs and settings SD gets pretty damn close to HD.

I would just look it up on google:
best quality capture hauppauge hd dvr
Then when you find the program with the best quality I would search youtube for the settings;
then whatever your editing program is, look up settings for that too.
Those settings videos usually have links to footage showing the quality achieved.
Obviously test things out.. Keep capturing one clip and seeing what settings are best.
Some capturing programs will drop frames, it can seem random but if you know when it usually happens you can avoid it.
Like, if you start capturing and frames drop until you've been capturing for 2 minutes as an example.
If you're having a problem capturing movement, looks blurry, odd in anyway really
it is usually an interlaced video.. just find a program that lets you de-interlace, and usually you would use the blend setting.
Sony Vegas is a good one, de-interlaces, nice hd formats, full screen videos.

That's what I had to put up with in figuring out the device I chose anyway..
Maybe it helps you all too.