Dear Zulfiqar Bhai
Thank you for your kind questions.
Best cables for 70CM (UHF) for home use are LMR-400 , RF-9913 ---- professional 7/8 -LMR-600
Find below their pictures along with a link that help you to find different cables and their losses as per frequencies.
Frankly , I think for Amateurs / Hobby , It is very hard to purchase these UHF cables from the source or suppliers.
The best idea is to search these cables in Junks or Cable surplus stores.
www.radiobooks.com/products/techinfo/coaxloss.htm
Finally a Starter tip : A Good Quality RG-11/U Commonly used by cable TV operators gives at least best performance over RG-213 on 70cm.
Hope it helps!
73s
AP2RF