I've been doing this a loooong time and have done it all when it comes to landing pages....
1. I had individual landers for every domain
2. I had fancy logos for many domains
3. I had an elaborate lander for all domains
4. Had my domains at numerous marketplaces
What did I opt for in the end?
Sheer simplicity google style, you hit my domain and you have two options...
View more domain or make an inquiry
For me, I saw no difference in inquiries regardless of how fancy the pages were, in fact I noticed when I made things simpler I actually got more inquiries via my Domain Inquiry form.