A reliable reseller provider is a company or individual that buys products in bulk from a manufacturer or distributor and then resells those products to customers. The goal is to provide customers with quality products at a lower price, while also ensuring that the reseller is able to make a profit. To be considered "reliable", the reseller provider must consistently deliver quality products, have good customer service, and have a reputation for honesty and transparency.
Give vote for centohost.com solutions. They have nice reputation in the hosting services market for stable servers in Bosnia.
I've found them to be the best host for support, advice, and pricing out of several hosts I have ever seen before.
The best reseller hosting depends on what you want. Do you want linux hosting or windows. Will you use cpanel or cPanel alternative. This will help you narrow it down better. Look for free set up 30 day money back trials also and no vat taxes if possible.