The thing that puts me of Snuggy Hoods is they're made of lyra (I think) and I used a lycra hoody on my man, NEVER AGAIN! He somehow got all tangled up in it and it came down over his eyes to the extent he was standing up in the field with it all over his eyes, bless him. So I'd never use anything made of lycra again - I think there was some posts on H&H a while ago about this so worth a search.
I use the Pessoa Sweet Itch hoody - brill - lots of room (you might need to order one size smaller); and a Premier Equine sweet itch hoody (cheap and cheerful but does the job).
Last year I bought a Pagony which is supposed to be a cheapy version of the Boett - don't bother! The quality was naff, the stitching came undone as it was only a single seam like you'd do in your sewing machine, and there was a strappy/elastic thing which basically held the hood on, and mine somehow got his foot tied up in that and after that wouldn't let anyone near him with it coz it has to go on over his head, a right pallaver.