Overall, I'm impressed by the D10's, especially considering the price point. They're lightweight, fit true-to-size, and feel comfortable. Some running shoes that I've owned in the past have had some odd pressure points and generally didn't feel great - these seem to fit my feet really well, at least. All that said, the D10's are definitely more about performance than comfort. There's not a ton of padding anywhere to be found, which is to be expected - and I don't think it'll be a problem considering the distances that these shoes are intended for.
The sole of these shoes is really well designed - the spikes are placed right where you want them to be. The sole is also 'split' into a top (ball of your foot to the toe, purple in the attached picture) and a bottom (mid-foot to heel, green in the attached picture). Both of these sections are rigid, but the shoe flexes just enough at the point where these sections meet - it feels purposeful while maintaining a really natural flex.
I think it is important to call out that these are really a specific tool - these aren't meant for folks that are just going out for a jog. These really have to be used on a track (ideally one that allows metal spikes!) and even then are more meant for serious runs vs. a leisurely jog. It's also worth mentioning that they put "distance" in the name of these shoes, but they're only intended for up to 5k. That definitely qualifies as distance on the track but could confuse some people that are looking for truly long distance shoes.
Its really hard to have any gripes about this shoe, especially for this price - they're a great choice for track runners!