Which Tube Amplifier should I purchase?

Hi..
I am on the verge of purchasing a Tube amplifier however I am not sure which one to purchase. The amplifier I purchase will be driving a pair of Pioneer speakers. I really like the MS 300b, however I am also pondering the MC100b. I do like the looks of the MS300b and I’ve read good things about it. Any suggestions on this. I’ll appreciate that. Thanks in advance.