I have flown the Shark, very nice, have not seen Jet.
I am not sure why you think JS1 jet is less reliable or further from
certification? It was very reliable for a number of us at the WGC at Leszno

yesterday! European certification for a non European glider will always be

difficult. With regards to Shark competitiveness, there are none here at
the
WGC. It all depends what you desire from a glider.
Tom


ASG 29 - 15/18, lovely glider (but aren't they all), proven competition
win=
ner, great to fly, a safe choice, but if you want an engine you can only
ha=
ve a traditional Solo turbo.

Ventus 2 ?CXT - 15/18, perhaps a fraction behind the ASG 29 at the
moment
a=
s an 18m comp winner particularly unless you get the A version. Now
apparen=
tly available with the FES as an alternative to the traditional Solo
turbo.

JS1C - 18/21, top competitor in both 18m and Open classes. Theoretically
av=
ailable as a jet sustainer, but allegedly less reliable/further from
certif=
ication than the Shark jet.

Lak 17b - 18, first glider on which FES was available

ASH 31 Mi - 18/21, not quite as competitive with a slightly higher wing
are=
a at 18m, but one of the more limited choices if you want a
self-launcher,
=
and the rotary engine is the smoothest and quietest self-launcher.

DG 808 - 18, highly competitive if you want a self-launcher.