I've used this extension and it worked nicely. Didn't encounter any difficulties during installation or configuration.
I made a support ticket to ask for a small modification and I got a response very quickly and Daniel made some changes and mailed me short after.
So in my case all I can say:
*Installation is easy.
*redShop has many features that you can configure. Too many too list them here but just check the website for more info.
*One of the most important thing is SUPPORT.
And I can honestly tell you that the support is great. You get an answer very fast. Sometimes even at 1.00 am (yes, I'm a workaholic :-)). Even when you ask silly question when you overlook something you always get a reply.
So if you are looking for a shop with interesting features and very good support then you just found the right one.
Oh by the way, there is a feature request forum where you can request new features and in a couple of months a lot has been added!
Great work guys.
This installation and configuration was easy and it works perfectly. Also the debug-window which show you the names for the page, sections, categories is great.
I highly recommend you to try this component. You won't be disappointed!
Keep up the good work!