The CRJ-700 is anything but slow in both speed and climb. The engine restrictions were recently removed and it will take off from the short runway in Key West, full pax, climb easily at 250/290/.74 to 370 and sometimes 410 (19 min to 370) and then cruise at .80 with no problem at any altitude.
The CRJ-200 is very temperature critical regarding climb performance. At ISA+10 temps in the climb, you will usually slow down to 500 fpm after FL220-250, but then you can maintain that into the low to mid 30's. Cruise speed at your final altitude is usually flight planned at .77. After level off, the plane will usually have no problem maintaining that speed.
The CRJ-200 is very temperature critical regarding climb performance. At ISA+10 temps in the climb, you will usually slow down to 500 fpm after FL220-250, but then you can maintain that into the low to mid 30's. Cruise speed at your final altitude is usually flight planned at .77. After level off, the plane will usually have no problem maintaining that speed.