What's the best top coat to use over acrylic?

[abbeylg]

currently using nsi glaze and go but seems abit dull, there's not much shine

 

[Trinity]

I don't, I buff to a high shine with a glossing buffer. Every top coat I've tried either dulls, cracks or discolours....never have a problem with those buffed

 

[abbeylg]

I never even thought of trying this, thankyou