im new so i will post in a few places. please give me a direction..

Ok i have found 2 companys that sell stainless oil filters Scotts/ K and P Engineering and crt performance. Scotts are $70 CRT are $39.99 from dealers like Rocky Mountian. I was gonna buy a scotts but i wanted to know if my warranty on my new bike would be affected by the filter and they say no so i ask what the warranty is on the filter itself, hmm.."Well there isnt one" so i was like um yea i dont think so. I went to CRT Performances website and they offer 100% warranty. What would you do?