For basic lens, getting a cheap or good filter should not matter that much. I'm not sure how true this is (may just be a sales tactic by shops) but if one is going to spend a couple of thousand dollars on lens, it may not be justified to put a $10 filter (kinda silly, like using basic tyres for a Ferrari - you may hear things like that). If your concern then is that using a cheapo filter may affect your photos, then using just a hood with no filter could help.
It all boils down to what you believe. I've moved from using hoods/no filter to clear filter/no-hoods (more for convenience than anything else) so up to you to try and figure out what you really want. I don't believe in UV filter but you may want that. So... informed personal choices :dunno: