I've got three 14" lcds (1024x768 native) that I use with my Macs. The last one I bought I paid $10 for from a pawn shop - it's a Dell. The others are an HP & a no-name. They all worked well with my Quadra 605.

I've found that the issue is usally with the adapter not the monitor. For the Q605 make sure you have 1 MB VRAM (two video modules installed) and it will do 1024 x 768 with no issues. Both Sys 7.5.5 & OS 8.1. If you hare having issues get a different video adapter with switches & set them for 1024x768.