If you prefer light roasts, I can't imagine there being a better choice than the DE1 right now. Light roasts generally benefit (but not always, sometimes the bloom is a negative) from a long bloom and the DE1 will give you that capability. You can of course replicate a bloom in other machines, slayers etc, including certain plumbed e61 machines that don't release the valve if you pause the line pressure (this is how I do it), but I don't think it will ever be as repeatable or as versatile as the de1.
If I was buying any machine right now, at any price point, I'd probably get a de1 pro and plumb it in. Heck, I'm almost close to trying to sell my perfectly fine syncronika for one