The HT is for casting rods (reels with larger sideplates will fit)
The quick draw is for spinning rod, when you lift rod out of holder it mantains pressure on the fish, as opposed to most holder you have to pull them towards the fish to reduce pressure to get the rod out of the holder.
On the HT, i went with this trick flush mounting system, but there are several other mounting styles available (example rail mount for mounting to bow rail), so there are many models depending on what you need.
These are high quality durable, will last, worth the money.
Ok, here is the link:
Cabela's Round Flush-Mount QuickDraw and 360HT Rod Holders=