I used Steris back in the 90's as well, from a vet here in the USA. It was painful shit, lol. I was just a newb when I used it too in the mid-90's Stuff worked QUICK. I never used suspension/aqueous again. I have used TNE, but not by itself, only in a test blend with prop, and then another with TPP and something else. Those blends were some of the best i've used...back in the late 2000's.
Overall, I just don't feel the chance of obtaining an abscess with suspension at this point in my life is worth it, nor the pain.
Actually, I did have some Schein suspension a few years later in the 90's....I can't even remember if i used that stuff though.
I couldn’t tell a difference btwn oil and water based TNE. Tren base I felt like water hit harder. Any oral injects I’ve always preferred water based. I think it’s just a personal preference at the end of the day.