My two favorite heads, regardless of price are the Carvin B1500 for the huge low end, massive volume lead sled type thing... clean, crisp, transparent, high quality, low price. Wonderful!
And... for small, moderate wattage applications, the MB LMII or F1... clean, crisp, transparent, high quality, low price, and very small footprint and lightweight.
In my A/Bing of the Carvin B1500 with other MUCH higher priced lead sled type amps (Aguilar DB750 and Glockenklang HR), the B1500 more than held its own IMO and IME.
In my A/Bing of the LMII and F1 with the other SMPS amps, including my Walter Woods Ultra, they too MORE than held their own.
Both 'best in class' IMO and IME if you are looking for 'clean, relatively transparent, but also musical and 'warm'.
If you don't mind the weight, are play VERY loud, and need 2ohm safe operation, it would be the B1500 for me. For everything else, the LMII/F1 would get the call!
Edit: I'm not a huge fan of either companies' cabs.