I have Peltor SportTac, for many years. Highly recommended. £100 + VAT or so. Noise reduction 26dB nominally, but I'll get into the details later.
They have two types of ProTac. The Protac3 line, comprising the Shooter and the Hunter. And the Protac2, which is different.
The Protac3 Shooter is a big clunky thing. But rated at 32db. I'd say ideal for RCOs etc, but not ideal for actually using in the field. £60 + VAT
The Protac3 Hunter is a slimmed down version of the above, sacrificing sound reduction, but not so badly, 26dB, same as the SportTac, similar size, but also only £60+VAT.
The Protac2 provides 32dB reduction, but in I think a slimmer package than the Protac3 Shooter. I've not handled a set so not quite sure. £100 +Vat, same as the SportTac.
MSA Sordin Supremes have only 19 dB noise reduction. Again, I will post facts and data below.
All the Peltors have audio input, for e.g. radios, dog trackers etc. Either by generic 3.5mm jack on the less expensive ones, or the better proprietary connector on the £100 upwards types. The proprietary cables cost extra, but aren't particularly expensive. They have generic ones, and ones dedicated for specific radios with the correct plug on the end for them.
Sordin Supremes also have a 3.5mm jack, and include a cable ending in a 3.5mm mono jack, which may or may not be directly usable with what you want to plug it into.
SportTacs run for 600 hours on 2 AAA cells.
Protac2s run for 270 hours on 2 AAs
Protac3s run for 100 hours on 2 AAs
Sordin don't appear to specify predicted run time (it all depends on usage of course)
TBH I think that the Peltor figures for Protacs are pessimistic, as they seem to be based on industrial protection headsets, used in continuous noisy environments where they might be expected to be working much harder than say the SporTacs would. I would expect, all things being equal, that AAs should last two or three times as long as AAAs. That said, my SporTacs last for ages.
Facts and data, from the manufacturers:
ProTac 3 (sketchy, but all that I could find):
View attachment 229275
SportTac:
View attachment 229277
ProTac 2:
View attachment 229278
Sordin Supreme Pro:
View attachment 229279
I think that is pretty conclusive.
So I would suggest a set of SportTacs for everyday shooting in the field.
Protac 2 for extensive range use, RCOing etc. Or the best for all uses. Same price as SportTacs but probably less sleek (as I said, I've not handled a set myself)
Or if on a budget, Protac 3s. Shooter for RCOing, Hunter for general use. Save £40 or so I suppose. Same performance but a bit less sophisticated.
If not bothered about actual published performance, the manufacturers' own data, then the Sordin Supreme Pros might do I suppose. But if you are going to buy something to actually protect your ears, why choose the least good option, at the highest price, based on data., not subjectivity ?