If you are not opposed to getting something used then you could do a whole lot worse than picking up a Power Designs 2005 or 2010 precision regulated DC supply. Brilliantly compact, oven stabilized, low noise designs. Even examples that appear to have been thrown out of moving vehicles (several times) test well within their design specifications, and they take up little room on your bench.
Another handy supply is the B&K Precision 1760a. Three output supply you can run as independent 2X 0-30V/2A, 1X 4.5-6.5V/5A supplies, in serial/parallel modes with tracking, constant current/constant voltage...lots of linear supply workhorse goodness to be had. I've seen these so mistreated it was unbelievable, and yet they keep on going, and going, and going.... Make sure you look for one that was made (entirely) in the USA. Folks cared more back then.