Yes, Be selective on your choices to but TV, but dont only believe that high price brands are better only. Sometimes new brands and cheap one can also serves your purpose and that too in half cost. Ex- Intex, VU, BPL etc are some TVs those are very nice and are good value for money in any given size i.e 32, 40+ etc.
Make sure you go for latest technology so that it can last longer according to the flavor and need.
Go for screens such as 32 or 40 so that it can give u better experience.
Almost all TVs come with basic ports such as USB, VGA etc so dont worry about these small things.
Make sure that you are getting after sales service as well i.e if needed anytime the seller is ready to assist.
Be Selective But be price conscious also and dont just follow big brands.