Hi,
hard to say... if we assume a good example for each, the Opticron will beat the Swaro - and not just by a bit.
First it has a wider aperture so more light and better resolution.
Second the Swaro comes with the fairly dated 20-60x zoom, not with the newer wide angle zoom. On the other hand the SDLv3 is Opticrons current top eyepiece - I only know its predecessor the v2, though - which is brilliant.
The problem is getting a good example... can you test the scopes before you buy? Swaro tends to hold its value fairly well, so if your used example is not completely overpriced, you can sell it on without great loss...
The Opticron is new, so it looses 20-30% at the moment you walk out of the store...
Joachim