I had pretty much focused in on a TT Cruiser - I had talked with the
guys at TT several times, and for my riding (25 mile rides 4 or 5 times
a month, paved trails around White Rock and such, about 13-14 average
MPH), the Cruiser seemed like a good fit for me. This morning I went to
RBM to test ride a Cruiser some more, and tried a Sun EZ
Tad they had (not sure if it was an SX or CX model). The seat on the Sun
is certainly lot more comfortable, and the ride and handling seemed
similar as far as my far-from-expert level of experience could tell. The Sun is about
$200 less than the Cruiser - not a huge money difference, but I'm
wondering if there's any significant quality differences or issues with
the Sun versus the Cruiser. I liked the Cruiser's price point versus
the Cat Trike products, but I don't want to buy something just because
it's a few hundred less and get stuck with a problem. I liked the
handling a bit better on the Cruiser. I'd sure appreciate any thoughts
and sage advice on the two bikes. Thanks!

Welcome to the forum, texasyankee. I don't know trikes well, so I'll let others answer your questions, but I think Opus is right. The Sun recumbents are pretty well built for inexpensive bikes and trikes, but they do tend to be heavy, and that is a major consideration for most of us.

Terra Trike is a tank - solid and reliable.  You'll get all the training you need on a lighter bike by going faster and pushing yourself.  That sun will stop being fun once you realize you can't break 15mph on the flats.
 
I'm not a big fan of either bike, but I'd still pick the TT.  
 
Either way, welcome!

Is this Richard?  Welcome to the discussion board!
 
Having had in our possession both a 65-pound EZ3 and a 30-pound Catrike Road over the last couple of years, allow me to chime in with a few comments:
 
1) I would agree that for casual trail and White rock cruising, the weight difference ain't that big of a deal... (except when lifting it into whatever you're hauling it in...)  I could get the EZ3 up above 20 mph if I wanted to, but that's just me...  You'll be somewhat slower climbing up the spillway on the Sun, but I don't imagine you're wanting to tackle the Loving Hills area, anyway!
 
2)  Seat comfort does count for something.  The foam pad on the Sun will soak up bumps better than the TT mesh, but it's still not very forgiving, really.  I would recommend doing a LONG test ride on a bumpy sidewalk, just to see how shock is transferred over time.  Sticking with lwider (1.5") lower pressure (50 psi) tires will also help absorb bumps.   Both seats adjust recline angle, so that's not an issue.  However, the TT seatback MAY be more comfortable than the Sun -- I found the support straps on the EZ3 would "dig in" to my back, on occasion.
 
3)  I don't know the steering linkage mechanism between the two models, but for casual riding I would recommend an "indirect" steering machine.  The Catrike was direct steer, and is very twitchy -- but then again, it's designed for quick response!
 
4)  I would imagine that factory service/support is better from TT, but RBM has a couple techs that are experienced in working on both vendor models, so it's probably a non-issue.  
 
5)  Check both models for places to mount things like water bottles, Camelback, bell, mirror, etc.  Sometimes there are significant differences between models as to what you can do.  And DEFINITELY get a mirror of some sort!
 
5)  However, look to the future...  if and when you want to upgrade, TT offers higher performance machines already, and you'll know their product to a certain extent if you get the Cruiser.  Sun does not make a higher-performance machine.
 
Good luck with whatever you choose, and let us know when you pull the trigger!
 
Paul

That's one reason to get a Greenspeed - they fold.
 
Although I have seen a real neat trike carrier on ebay for about 165.  Check that out.

Thanks, guys - the Zoomer's steering is a bit twitchy for me - I'll check out the Expedition, though - thanks!