Both the institutes you are mentioning are producing great results. Now Allen is a relatively old institution compared to Physics wallah. Allen has a great fees structure compared to Physics wallah and the teachers in the main branches may be great but in most of the sub branches are not great. Now in Allen kota the faculties are great. See choosing from this two is your decision. If you are attentive student and if you are disciplined to your study planning then going for the online course will be a great choice. This will not only save your money but it will also reduce your time lags (which may occur if you are out from your home in some other city). PW have really good faculties and they are producing amazing results in NEET.

Now if you wish to have a better environment and a competition which you want to feel in real life. Also if you are more attentive in offline classes compared to online classes then going for the Allen will be a better choice. The test series of Allen is very good undoubtedly and if you sincerely then you will be able to pass the NEET examination with flying colour. So based on your mindset, choose the institute. If I were there in place of you, then I would like to go for the Allen because it will give me a better experience towards study and the distractions will be lower if you can see your competitions everyday.

I hope my answer provides you some insight. Wish you a great day!