@ sephiroth2: ... okay, there's something you need to understand. The reason that Espadas are REPLACED is because they are not as strong as the PRESENT ESPADA (eg. Paviron(?) Espada. They aren't really all that strong at all compared to the present Espada). So, I'm not saying your character is weak, however I AM saying that it isn't as strong as the present First Espada.
@ Reckless Chaos: However, depending on the difference of power between Ichigo and Syra, Sleif's skin may still be like armor to you. Remember, the Arrancar have the ability to strengthen the thickness of their skin/defenses (Hierro), thus giving them a better chance of surviving heavy blows. Again, not saying your character is weak, however if your character is only stronger than Ichigo by a few portions, then I'm going to have to side with the former First Espada in terms of strength... for now, at least.