Are the KEF Blade/Blade 2 Metas a Significant Upgrade from Blade?

I wouldn't count out the Krell without trying it. I think the Michi would be sonically inferior to your Krell and the blades are surprisingly efficient, specifically with most full range speakers if my amp isn't strong enough I hear it as a lack of balance in the bass, not so with the blades. 

I liked the Kef Reference 5 Meta better than the Kef Blade 2 Meta

@rick2000 What was the difference for you? I have heard both myself (prior to Meta).

@yyzsantabarbara  The Kef Reference 5 Meta's had a bigger soundstage and were more musical engaging than the Kef Blade 2 Meta's 

That's interesting and probably room/setup dependent even according to kefs own data.