Mastertech, if you ever bothered actually to help people on the forum instead of coming here to push your own (in this case contentious) opinions, you would notice that Ewido does remove things that avast! cannot. It is particularly good at removing processes injecting Trojans. Search the forum if you don't believe me.
I also clean infected computers and always find that Sysclean misses some malware, as does avast! and indeed almost any AV. In the end it's usually necessary to kill a few with HijackThis!
As to the trial version having the realtime detection feature, that's because Ewido wants people to buy the product. It is their right to try to sell their product. People can evaluate it and buy it if they want.