I owned a Jantar-1 - the earlier 19 meter version of the Jantar 2. I
had a lot of fun and did most of my badge flights in it. Its flight
characteristics and handling are benign, but it is under-ruddered with
a lot more adverse yaw than you'll see in the Nimbus. The canopy is a
two-piece with the rear section removable, but there is a hinged
retrofit.

Fit and finish are not as good as the German gliders, but it is tough
and very well-built. Mine had gel-coat issues and the wings had to be
refinished (in polyurethane).

The main downsides are rigging and ground-handling. My Jantar-1 had
single and very heavy wing panels, so appearance of my trailer on the
field would result in the scene quickly emptying! A one-man rigging
aid would be very helpful and if you have a hangar, I wouldn't worry.

Price/performance is very good.

Mike