Nose drops vs. needle

My old vet used nose drops to administer our annual booster.
However, my new vet says that they use an injection.

Is one better than the other? Does it make any difference?

Also, they said to bring in a stool sample to check for intestinal parasites.
Is this really necessary?

I prefer the injectable vaccine. The nasal vaccine is known to sometimes cause ulcers in the nostrils...not serious, they'll heal, but I'd rather not cause my cat the discomfort.

The fecal exam is recommended to see if your cat has worms. Even if your cat was dewormed, and even if your cat was previously negative for worms, and even if your cat never goes outdoors, worms can recurr. Roundworms, for example, can exist in the larval stage encysted in soft tissue for long periods of time and dewormers don't affect them when they're in that state.

I have read the intranasal provide a faster onset of immunity, but for shorter periods of times. Also, the injectable has a chance low risk of vaccination site-sarcoma. This is only what I have read and not facts.
I like to refer to The Winn Feline Foundation. On this page of the site, when you scroll down you will find 2 articles on vaccinations. I hope this helps.
http://www.winnfelinehealth.org/health.html Both articles are worth reading.

ok, thanks,
I'm about to check out that article.