That's an easy one. LS4 or DG300 will be your best bet for 30K.

Ramy

Never seen an LS-4 for sale; and I *love* our two local DG-300's - but
the ones I've seen online seem to go for closer to $40k or $50k!
Thought they were out of my budget (unless people are asking for WAY
more than they're actually selling the aircraft for)...

--Noel