(2) The shameless plug actually promoted a PW-5/6, which in my very
humble opinion (though shared by many others) is a couple of
offensively ugly gliders. This probably made my initial statement a bit
more "spicy" than necessary. ;-)

Answering your question, I would recommend a combination of ASK-21 and
LS-4, both quite versatile gliders, usable for teaching but also in
competitions.

Agreed on pewee 5, but how exactly is Ask-21 better than Pewee 6?
Other than brand new price tag being doubled or so. Same 1:31 gliding
ratio according to SM testing, so you hypothesis is based on the same
idea people go and buy MB cars thinking they've just got a better
build, reliable flashy vehicle soon thereafter they realize it's a
flashy Ford quality money pit. My club picks would be Pewee 6 - for
a price of 20 year old Ask-21 used in a club you can get a new one and
Ls-4.