f:select works fine with form binding; giving up on f:radioBlock.

ui-samples-plugin/src/main/java/jenkins/plugins/ui_samples/HeteroList.java

@@ -29,6 +29,7 @@ import hudson.XmlFile;
 import hudson.model.AbstractDescribableImpl;
 import hudson.model.Descriptor;
 import hudson.util.FormApply;
+import hudson.util.ListBoxModel;
 import java.io.File;
 import java.io.IOException;
 import java.util.ArrayList;
@@ -138,9 +139,9 @@ import org.kohsuke.stapler.StaplerRequest;
             @Override public String getDisplayName() {
                 return "Choice Entry";
             }
-            
-            public String[] getChoices() {
-                return new String[] {"good", "bad", "ugly"};
+
+            public ListBoxModel doFillChoiceItems() {
+                return new ListBoxModel().add("good").add("bad").add("ugly");
             }
 
         }

ui-samples-plugin/src/main/resources/jenkins/plugins/ui_samples/HeteroList/ChoiceEntry/config.jelly

@@ -25,7 +25,8 @@ THE SOFTWARE.
 
 <?jelly escape-by-default='true'?>
 <j:jelly xmlns:j="jelly:core" xmlns:f="/lib/form">
-    <j:forEach var="choice" items="${descriptor.choices}">
-        <f:radioBlock name="choice" value="${choice}" title="${choice}" checked="${instance.choice == choice}"/>
-    </j:forEach>
+    <f:entry field="choice" title="Choice">
+        <f:select/>
+    </f:entry>
+    <!-- TODO figure out if f:radioBlock can also be used for form binding: Failed to instantiate class java.lang.String from {"value":"good"} -->
 </j:jelly>