I've been printing for years on a Canon iX6520 which is an equivalent of your Epson 1430. Up to 13" x 19" with dye based ink.
It just sat unused for over two months and without checking if it need it or not I ran one clean cycle and it's back to work !
A little over two months ago I had an opportunity to purchase a used Canon Pro - 10 and decided to move up to pigment based inks.
It's hard to quantify the difference in quality but they are archival prints. Works just fine IF you use it regularly, sigh...
Even after sitting unused for two or three weeks I'm finding it takes multiple cleaning cycles to get operational.
And that can take up to a 1/3 of the ink volume of the cartridges, double sigh.
BTW > when I purchased the iX6520 it was last years model and the full price of $500 when down to $140 after rebates.
The full price of the Pro 10 was roughly $700 and I paid $200 used which included ~ 8 cartridges. Right now there is a $250 rebate on this model new.
Prints from the Pro 10 do appear "better" but the reason I bought it was to cut the tether to my pro printing service and offer archival level prints. For the few dye based prints I have sold I made it clear to the client that their life span is probably less than 10 years and they are priced accordingly
At this point my demand for prints for sale is down to the point I'm not saving any money but I have complete control of the product.