Worming

I have been reading off and on all day, searching the site for anything and everything I can find! I think I am going to go with Safe-Gaurd. I am buying my frontline plus from http://www.dog.com and they seem to have the cheapest prices I have found yet. I decided on the Safe-Gaurd because the listing for it there says it treats tape worms and I have seen the "rice" on Jesse's feces. I spoke with my vet about wormers and flea stuff. She wrote up a price for all the stuff and I found the Frontline for a good $15 cheaper. She wanted $18 for the tape worm tablet and I have seen many tabs for about $5 online, plus shipping...I figured since Safe-gaurd and frontline are on the same site I would just get the safe-gaurd, since it treats other worms and I am not sure if the one she has does. Does anyone have any reccomendations for a heart worm preventative? I can get Iverhart from my vet for $16 for the 20lb Rat and $45 for the 48lb pup. I have looked them up online and have found most sites have Iverhart for about the same or a few cents cheaper or more!? Any help and advice would be great. Are there any daily wormers out there for dogs? My horses are on daily wormer and it so much easier.
Thanks,
Sarah