I owned the H20-10's.... i personally found ANR headsets to never be worth the extra money you spend. My H20-10's lasted me through nearly 2000 hours of flying with no foulups and no battery changges. They had plenty of noise reduction and were nice and cushy enough to make longer flights quite comfortable, especially when I wore a hat.
My advice to you..spend that hundred dollars or more difference (plus batteries) on a multi-engine hour or two.. its money better spent.
Now that I fly a jet... Telex's are the brand for me.
Be careful with the 20-10. I originally purchased it and traded it for the H10-13X. The 20-10 has BIG ear cups and the top pillow whatever sits really high on your head. It may fit you well though whatever...
I'd get some ANR/ENC etc. When you flip the switch it's night and day... can you hear me now? How about now?
I don't know anything about their house-brand headsets, but they're a reputable shop, have been around forever, and aren't going anywhere anytime soon. I've met both Marv and his son Dan--in fact, I had a conversation with Dan just last Friday on the condition of the aviation industry. Great shop, and they now carry the full line of Sky High Gear products.
I had and sold a pair of DC H20-10, they just didn't fit my head and were heavy. Well made though. I replaced them with a pair of Lightspeed 3G-20. They are excellent, and the leather seals and pads are nice.
I don't like the way DC sets fit personally. But they are solid headsets, and I have one that I give to passengers if all my others are being used.
The old Lightspeed is not the place to look. If you are looking at anything from that company, at a minimum go for the 3G series. They are a new company, and a number of old issues exist (though they do have great quick service from what I've read). I don't like the way they feel on my head either, but the 3G that I tried on are much better fit for me than any DC model.
I'm a Telex guy. I like the way they fit, fold up, and protect your hearing. I've got a couple old 3100 models, and an old 3000 model. Never a problem. I'm going to get a 50D eventually, but in your lower price range, you may want to look at their cheaper ANR models.
The Flightcom Denali is nice as well, but I must have a lopsided head, as it doesn't feel right on one ear when I tried it on.