From where I'm sitting, that looks a quite traditional, easy to ride design like many bikes designed in the era when such LWB and CLWB bikes were popular in the USA, using straightforward bike technology. What's surprising is that a version of this is, or was until recently, made in steel, and an aluminium version was made in recent years. Though it's no sports machine, probably needing all those gears to haul itself up hills, it could turn out to be a cheap and cheerful fun machine that would encourage the casual rider out just to enjoy its differentness. I can't comment on the handling. Many US LWB bikes have extravagantly raked forks while others don't, but they mostly tend towards predictable, stable handling.
Something more sporty might come with its own quick handling traits tending towards twitchiness which could be a discouragement to riders who might really be more at home on something more sedate.
As I have found out myself when seeking opinions on various bikes, in the recumbent world many of them are so uncommon that you end up becoming your own expert by just going out and owning one. Sometimes the less you paid for it, and the more of yourself you put into it, the more you come to like it, too. But there's only one way to find that out, and that's to take the plunge. Perhaps the OP will become our resident source of information on the Sun EZ -1 Super Cruiser?
