I found another browser that works with MicroEmulator and Jaguar- UC Browser 9.2.0.311, but only the Lite version (the full version stops as it tries to link to a text messages folder). It's linked here-
https://www.mobiles24.co/downloads/s/581772-111-uc_browser_920311_lite
Download the JAR and not the JAD.
I played around with it a bit, but didn't get too far into it. I know MacRumors won't load without a useragent, but you can change it to either WEB or WAP in the settings of the browser. If anyone wants to play around with it, feel free. I'm too tired tonight and need sleep.
Perhaps there's a newer, Lite version of the browser somewhere (9.5.0.449 is the latest java version of the browser, and it's three months newer than Opera Mini)...?