What are very precise gauges? Specifically looking for a boost gauge that is not defi priced.

I have an old school blitz dual turbo timer that has a little digital boost gauge but I feel like it may not be accurate. The readings feel delayed. They read differently every time I step on it for a boost test, and also I don't want to believe that it's shooting up to 11.5psi on only a downpipe. Does anyone have experience with these?

 

I have SPA gauges: boost/water temp and oil pressure/oil temp. I am very, very happy with them although they were a bit pricey.

 

Defi d-series gauges are decently priced. I bought mine brand new 6 years ago for 130. But I heard they discontinued the d-series line?

I might change up my gauges cause im bored so maybe they'll be for sale soon.