He's better than Robinson IMHO although has had some rotten luck with injuries.. Can play as a midfield anchorman or as a centre back. Centre back is supposed to be his most natural position, although he very rarely played there for us so I can't comment too much.
He was first choice for us alongside Jonathan Smith in central midfield during the Conference pissing season until he picked up a string of injuries starting in about October/November IIRC. We signed Pelly Ruddock and then Cameron McGeehan on loans to replace him and ended up signing both permanently, plus signed Nathan Doyle and Andy Drury last summer all at great expense, so Parry was pushed waaay down the pecking order. He's never had a look-in since that first injury which is a shame as he looked a decent prospect.
The above info from a Luton fan on another forum.