Lamm LL2 vs. Blue Ciircle BC3000 GzPz vs. Calypso.

Never heard the Blue circle,but have heard the Lamm and the Calypso head to head- Calypso was my choice by a wide margin.

cant comment on the Lamm but I had the Calypso on loan for quite a while and liked it a lot. Finally I went with Ayre K-5xe as it was more transparent, detailed and had a better sense of timing.

Lamm LL2