or Sigma 18-50mm F2.8 EX DC or anon EF 28-105 mm 3.5-4.5 II USM I convinced my dad to buy me a new lense. No more than 400ish. This will be hopefully the lense i keep on the camera most of the time already have 50mm. and a flash 420ex I've been looking for something that will replace the kit lense. Any other suggetsions?