I had a couple of dives with Manta around fours years back when me & sandie first started diving and if we knew what we know now?, then we wouldn't have used them.
All I hope is their've improved since we used them and bought some new kit since then?
ie, some regs with octopus on them and BCD's with cambands which aren't that old and worn they can't hold a tank in place
Also I hope they don't still employ a guide that takes newly quailifed OW's down to 27metres and then splits a bubby pair up because ones on lower air and then buggers off himself leaving the one with no air to themselves in busy harbour!
Apart from that? Yeah friendly.
Lesson's learnt from this? Get your own kit and don't trust that guides are experienced.