I have two Cutters, 'Abominatus' for Thargoid interceptors and 'The Gaping Maw' cargo/ mining vessel which can swallow half a billion creds worth of painite. The Cutter is a gank proof end game ship and definitely worth the grind, but it will cost cr750+ mil and a lot of mats to fit it nicely.
If you want to rank up fast, do data runs for rep+++ out of Ngallin.
edit: congrats on acquiring the Corvette, now weld a fsd booster in it and stride the galaxy like a colossus.