Hi, I currently use a Canon T2i with a Canon 100mm 2.8 Macro. I occasionally use a 430 exII speedlight with a cheap diffuser. I have a set of kenko extension tubes but rarely use them. I do most of my macro shooting handheld, manual focus, and just move myself closer to the bugs and things until I get focus. It usually takes several shots to get a good one. I always want to get closer though. Would a 1.4x teleconverter help? Would using the extension tubes help? If I remember correctly I stopped using them because I couldn't get things in focus handheld. Then again, I can't remember if that was before I started using my speedlite. I couldn't figure out how to just post pics, so here are links to 3 of my photos:
http://www.flickr.com …/13172222@N05/7613260212/
http://www.flickr.com …/13172222@N05/7647252736/
http://www.flickr.com …/13172222@N05/7613024990/