I'm still using my Mac Pro from 2008 and a still older 30" cinema display. I really need a new set up but so far I've not found the iMac or Mac Pro offerings r

I'm still using my Mac Pro from 2008 and a still older 30" cinema display. I really need a new set up but so far I've not found the iMac or Mac Pro offerings really compelling. I'm not really sure I want to sign up for an all in one design because displays are often useful for much longer than workstations and the last generation of Mac Pro didn't really seem like they were worth the cost.