Digital amplifier fans, NAD C298 Purifi Eigentakt

I have a tube amp, an A/B amp and now I'd like to experiment with a D amplifier. I would like something from a big name company for build quality, warranty and reputation. I would also like some heft in terms of watts and the ability to get close to doubling output from 8 to 4 ohms. I like NAD's C298, especially price wise but it seems a little lite on wattage. I know I am not describing exactly what I want with sound signature and so forth, but I'd like some names of amplifiers that might meet the wattage, say 300 or above and be below the $3000 mark. Perhaps such a beast doesn't exist except with the boutique manufacturers? With some suggestions, I can then do a little research to see if it fits the bill.

Thanks in advance!