Tough 1500 would probably be your best bet. Two reasons.
The material differences in-between 1500 and 2000. They are close to the same material with a trade off. Flexibility without breaking for impact strength. 2000 will not flex as far without breaking, but can take large impacts. 1500 can flex much more but cannot take as much of an impact as 2000. That being said the lower bar for impact that 1500 sets is still very high.
Post processing is also much easier with 1500 over 2000. 2000 is very difficult to clean, worse than the flexible material. I usually wash tough 2000 for 20 minutes in IPA before its done. Fine details will run a risk of damage during that time.
As far as details go tough 1500 will produce better results than 2000, but neither of them will come close to the standard grey.
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