03, I think it's pretty clear from these answers above, it depends entirely on the brand you chose. For example, the one fellow is killed by cyp.......that can only be the deadly Tt, or t400. The euro props are painless and very effective. You can't go wrong with Viramone, testovis is fine too. The only test brands that hurt are the one's that substitute alcohol for clean lab work.
It has to be something else, Wildcat, cause viramone is totally painless......I've used it for years in tris, bis delts, even calves.
If you are going foreign, why not just get the viramone.....I guarantee you will be happy.