Ok, so first thing, thanks for your reply Wayno.
So I've deduced that you only have the polypro thermal underwear and like most of us find it ok for average use.
The Jackets...My wife owns Northface, Macpac, Marmot and a Kathmandu Shells, all of which are targeted for very similar use and conditions. I can also add Paddy Palin to the list. Her Kathmandu Jacket is used to commute in the rain on her bike. It has a slightly softer inner hood material compared to the others but has performed no differently whatsoever while riding at 30kph in the rain.
This particular Jacket retailed for $599....our purchase price was $199. Another topic
Another good review of the Jacket (Nerius jacket) -
http://www.crazyguyonabike.com/doc/page/?page_id=333048

Down Jackets....we own but not Kathmandu so I wont comment on until we have used them....Comparing to Mont Bell maybe an unfair comparison.
Fleece Jackets...The ones we have are basic and have been used extensively for years in the Backcountry and daily use around town. They work. My wife has one that is over 10 years old and is still going strong.
We have a fairly big range of Hiking and casual wear and the current shorts I use for work have lasted as long as my Hard Yakka and King Gee work wear.
I have been using a small Kathmandu daypack very heavily (3-4 days a week) as my MTB and trail running pack for over 8 years straight. Not a single issue, durability or otherwise.
If you are
sensible about what you are comparing to I think you will find the gear for the most part works and is reasonable value for money if you are smart about when you purchase.
I understand you don't always need to buy a piece of gear to pick out the things you don't like about it by looking at it in store. Some of your points are completely valid but I want people to build opinions on any brand through personal experience in the outdoors, not in a shop, and certainly not hearsay. As for not finding many reviews for the gear online?...Maybe those that own Kathmandu gear can give some more personal experiences with them.