If you're looking for the best quality and a reliable product, I'd say HockeyShot tiles are your best option. I skated on them once a few years ago. Guys like Jeremy from How to Hockey and Pavel Barber use them among others.
Revolution Tiles
Synthetic Ice Tiles
They come in a 'Regular' and 'Premium' option starting at $15.99 and $18.99 per tile. The premium tiles are a little thicker and should last at least a couple more years.
Other things to keep in mind are, there will be a lot of plastic shavings you will need to sweep/vacuum away every few hours. While it does a solid job, it's not gonna feel like ice 100%, of course. You will not glide nearly as much and you will "slide" more when you stop instead of stopping on a dime like on ice. This is the case for all synthetic ice.
You might find some cheaper options out there but i'd question the quality of those.