I have not listened to the one that you mentioned but other models of etymotic. In the acoustic genre, I prefer Sennheiser. HD 280 or 380 may have better sound isolation than the 25 (which is supraaural). AKG is another option.
I don't much like the HD25. The etymotics are more to my liking. I opted for the series with headset functionality and got the HF3. It isolates well and has an even, clean sound. Not heaps of bass but even and unhyped, and it goes low - just not low and loud.
For location monitoring with closed cans I use the HD25-1.
These are the same pair that I bought back in 1989 or 1990 and are still going strong.
I have replaced the earpads a few times over the years and now prefer the velour version over the leatherette ones - I replaced the headband pads just once.
I find the HD25 excellent for location monitoring - they enable great listening to detail, seal well against outside noise and are very efficient (120dB) which means the headphone amp does not need to work so hard and minimises battery drain on a battery powered unit.
Excellent cans (though I do rather fancy the new aluminium ones).