I'm a big fan of WCP. I've used it for about two years now and it saves me a lot of time in sorting out rounds, creating schedules, etc. It's easy to use even for a complete beginner and as you get used to it you find some nice wee features that are the icing on the cake.
It's a bit disappointing that it's not being developed further but the product as it stands is very good. If it wasn't I wouldn't use it!
Lots of people seem disappointed with WCP Lite but PDAs aren't made anymore so it's not surprising hardly and development went into it. What would be nice is an app for iPhones and Android but that ain't gonna happen

From what I've heard, Compass 180 is a couple of steps up from WCP and likely to be too much in terms of features and price for your average sole trading window cleaner.