MD I have played the Helicore and Spirocore sets. In terms of warmth and complexity the helicores were a bit better to my ears. Colour, projection were about equal. Spirocore takes brilliancy easily. Both sets about the same in longevity. just my 2.
Other strings I have combined with excellent results were the Infield red G&D with the Infield Blue A&E. Larson G,D,& A with the Jagar E. Best ---- Lp