EB1A attorney recommendation

Hi all, this forum has been very useful in researching EB1A. I have a business/executive profile working in tech and looking to apply for EB1A. I have multiple lawyers confirming my case and have proposals from below. I am struggling to make a decision here in particular - bigger firm or boutique firm. Would love recent experience / recommendations

1. Chen
2. Ellis Porter
3. Chris Ingham
4. Vanguard Visa
5. Manifest Law
6. Path Law
7. US Immi Visa
8. Prakash Dubey