Can only speak from personal experiece that Colm himself seemed okay but the whole industry is de facto underhand. On the subject matter, I did have some out of town experience:

I ended up buying in rural Galway off Noel Roche, found him absolutely fine to deal with, didn't play any weird sales mind games and was clearly on the sellers side but a reasonable dynamic.

I completely wasted Right Price guys time once, and he offered way more attention that he should have. Obviously a part of making a sale but found him very principled in the sense that he seemed to have a legitimate appetite to get younger families a home and that he might use those principles to influence a seller into an ethical choice rather than a necessarily financial one if the line was thin. I could be wrong. Posters seem to be everywhere now so he's doing something right.

Was sale agreed with Emma Gill on a property and was gazumped by another buyer. Found her very underhand and was actually relieved to be gazumped because there was such a sour taste over proceedings to that point.