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I had an original Sparc. After about four years of use I ran into problems. Vortex immediately sent my the newer version ie the Spark2 and it is amazing. Unless you feel real comfortable with the SIG warranty in Canada I would go with the Sparc2. Is is a great little red dot with the Vortex warranty. The latter trumps the decision in my view. Vortex does not question why it broike...you just get a new product.