Thanks again
@Siege not overly fussed with the hose sizes as I don't have any inline stuff or glassware to worry about. All 3 lucky enough will fit in the cabinet as well. I'm tempted by the eheim as a lot of people rate their media highly as well
With it being a low tech and it having been running fine for 5 years on a filter giving a max of 400lph but probably much lower in reality, then even with the eheim only being a max of 1250lph compared to the jbl 1900 or the aquael at 2000 then actually everything is a massive improvement on what was there before.