I recommend using it for topping up cryptocurrency wallets. I often turn to this service myself. Overall, the exchange rate is decent or good. However, it's worth checking on BestChange — sometimes there are rare exceptions with the rate. The exchange happens instantly, without operators and waiting. I've exchanged many times and have been satisfied. A couple of times I used a coupon that came via email from partner exchanges. I don't see any point in specifically looking for it — the difference is negligible.
