You can try using the trial version of our UI controls, which actually is not limited anyhow. Using the controls would only result in displaying occasionally a trial message.
Currently our offering does not include ListView and RTB controls. We definitely have the ListView in mind since it an important control for presentation layer of almost any app. It probably rollout with the next Q.
What I can suggest is using a control which is optimized to show large number of records, such as the MS GridView. May be with some custom painting you can make it look like ListView quite successfully.
The RTB is a slightly different component. Although the MS RTB control is good, you may try some of the other controls that are offered on the market, which are usually better than the default MS one. Here is one suggestion you can try:http://www.textcontrol.com/
. It seems to offer a lot more than a regular text-control, but seems to be more optimized to handle greater loads, like in your case.
Another solution would be to embed the MS Word control and use it as a text processor internally in your app.