I use a Profet 3.2 through an EBS 15" which is 4 ohms, so I get the full 300 watts. It's got plenty of volume and sounds great and is really quiet (apart from my single coil hum!) and is just about perfect for the price.
The 'just about' bit is only let down by the fact that I've had two problems with it so far. One was fixed under warranty and the other will be, when I can send it back. The first was a very strange pulsing click sound that eventually killed the amp, until it was repaired. As it was bought from Thomann, and shipped back to Germany for repair, I never found out exactly what it was. The second problem is a dodgy input jack that is intermittent and seems to have gone away but I don't trust it.
To sum up, if it had been problem free, I would 100% recommend it. As it is, I still recommend it, just with the reliability factor detracting a bit!