Nope, HW50 or HW55 is your best option for low input lag and 2D with very good black levels. I'm sure the Epson 5030/6030 is fine, but I don't think it would be better. There's trade-offs with either, but personally I would rather have the quieter Sony...whirring fans just detract from the overall immersive experience.
If you're planning on upgrading to 4K in a couple of years, the Epson 5030 may be the smarter/cheaper buy, but if you're going to wait 4-5 years (like myself) then I would get the Sony.
I couldn't imagine someone being unhappy with either choice though. There's much smaller LED/LCD HDTV's that cost more than either of these PJ's...much more.