I was personally disappointed with the low range Sennheiser (only tried 201 and 202), but you may have better luck with the 203. Last month, the HD238 were on sale for $40, you would have been happy with those, I think, if they sound anything like the HD428. Go with the portapro if you want supraaural. Basically, do you want portable or not? The JVC and Superlux aren't very much fun to carry around. If you're around the house, then go big.
To Ishcabible: Well, those Beyer DT880 I used are $180 headphones. Sennheiser HD25 are $180 headphones. So, to start with, $180 headphones sound something like those. $180 headphones sound like a competent engineer put $180 worth of design and materials into them to make them perform so that someone with an audio background/training is not let down by them. If you tape $100 bills on the Portapros, and they magically change the acoustics, then yes, you would have $230 headphones. Do they sound and feel like HD650's or K701's with those $100 bills taped on? Then, enjoy.