Most of the breeds you listed are kind of exotic in my area of the U.S., but we have a lot of Quarter horses and a few Thoroughbreds.
Both of these are extremely versatile. Here, pleasure or show tb's are frequently ex-racers or trained for the track and never raced. I don't know much about the common use of tb's in Europe, but if you go for a younger one you may have some re-training to do that takes someone experienced in dealing with OTTB's. Ex-racers can often be re-trained to be excellent trail mounts, hunters, dressage horses, eventers, almost anything under the sun. A lot of members on this forum have tb's, OT and otherwise, and they can give more info.
I personally like Quarter horses. My family has owned one purebred, and one QH bred pony, both wonderful horses. I can't think off the top of my head of one QH I know who is what I would term "spooky" or "nervous" (although, a couple I know are rather "bullheaded", but training plays a large part in how calm and agreeable any horse is...). In the U.S., there are basically 2 types of QH (I'll try to post pics) http://www.harrellherefordranch.com/...n-doc_body.jpg
Above should be a link to a photo of the "older style" QH. These usually fall between 14 and 15.3 hands, and tend to be wider bodied, very well muscled, with comparatively small feet and legs, and a more "wedge" shaped head. This type is used in the U.S. for western events (although my sister rides her Doc Bar cutting bred gelding in hunt seat classes with great success), such as reining, cutting, barrel racing, and roping. http://www.maplehillfarms.com/images...nce1091502.JPG
This is an Appendix Quarter horse, usually a cross between a QH and a TB. They tend to be taller and rangier built than the older, foundation type QH, with a more TB head and profile. Many hunter and eventing riders use Appendix QH's, they tend have more of the build and scope of movement desired for these events. However, more of these bigger, leggier horses are coming into the Western industry. especially Western Pleasure and Equitation classes.
I'm not much help on the other breeds, aside from broad history and general facts. Friesians and Lusitanos are both high on my list of utterly gorgeous animals, though!
I hope that answered a few of your questions, and welcome to the Forum!