That was a long time ago, Don, that you rode a Spyder. You probably shorten up a little since then.
The 2010 has the 990 engine, 2 cylinder and vibrates some. To us at the time when we test rode it, same day and unit as you did, it was a no player and was not attractive. In 2014 they came out with the 1330, 3 cyl and we bought that. There is some vibration at start up, but soon smooths out. We really like it:happy65:. It has a lot of pluses: One brake, no kick stand, stable, a hoot in the corners, lots of power, gravel friendly, except for belt issues, cheaper tires, low heat radiation, 10,000km oil changes (2014 went to 15,000) easy steering as opposed to a trike (diminishing power assisted).
Downsides: expensive parts, not easy for oil changes, Kenda tires are junk, engine vibration (990), storage on the RS model, seat isn't the greatest for a long haul, 4.5 inch ground clearance, mirrors aren't in the greatest location for 2up, but they work.
You will need a 6' wide trailer, 8'long. Because of low clearance you need a long ramp or a hill to help out. Not only will the center get stuck, the nose is also a pain to load.
Rotax is known to be a very good unit, at least the reputation of the V4.
Personally I would go for an RT and 2014 or later to get the 3 cylinder.
Nope, would not go back to 2 wheels, just to much fun on these.
Things to look for.
Kenda tires are junk, they don't last long, so if it has Kendas plan on new skins soon, use Kumos, General, Koyo.
It should track straight, on the straights and not twitchy in the corners or it will need an alignment.
Belt will vibrate if tension is off. It should have an idler installed about half way. The earlier models have a much higher tension spec and tend to take out the engine end bearing. Later they lowered the tension setting and seems to be better.
That's all I can think of right now.