here in aust people are having great success with the nitto pump - only 1350aud as well
my tuner @ crd has 1 on display which in fact chewed up the cast iron bits of a block, the rconod went through the block which then lead to the cast bits which were crushed by this nitto pump, obviously a billet gear...no damage to the gears whatsoever (might be hard to believe but very true), ive seen the pump with my own eyes
as far as l know the Reimax is nissans high flow pump, but you have to send your standard pump to them for the upgrade. and its not cheap it was around 700GBP when l looked. the Tomei however is not an upgraded unit. one other thing with the tomei, you dont have to remove the sump to adjust output. for that reason l when tomei.
but l have not heard any bad reports on the Reimax. its just easier in the uk to buy tomei