Not sure if this is of any value, but I'd presume any suitable paste type (no-clean / water soluble) for your needs from the chemistry perspective from any major manufacturer, e.g. Alpha / Indium / Kester etc. should be fine when it comes to their tackiness. Certainly more expensive than your no-name lord-knows-what Chinese stuff, but at least the components appear to stay in place well enough in factories running these proper brands.