55 - light wings (just over 100 lbs - I have no problem getting help
rigging); 2 main pins. LS-8 wings are heavier. Single main pin.
Rigging probably a wash, unless you have a bad back - then 55
favoured.
55 great in light conditions (east). AUW 1100 lbs when full of water
when things are strong.
Factory support available for both; windpath has good response. No
annual fee. LS-8 - fee.
Finish for my 55 is very nice still (1990 model).
I'm probably a couple of percent short in performance (.941 vs .915
for LS-8 15m, .88 18m); I can live with that.
Subjectively, the 55 is very pretty in the air (should count for
something). Thermals 'speak' to you like in an LS-4. Haven't flown
LS-8 but imagine it's the same.
55 - no carbon anything; LS-8, wings, tail etc are carbon.
I'd be happy with either.