My old (circa 1982) Craftsman 1.25 HP router would not hold a large (3/4" straight @ 1/8" depth) bit securely so I did some homework and picked up the DeWalt DW618PK router. The DW618 is a 2.25 HP variable speed router with 1/2" collet. The PK indicates that it comes with both a fixed base and a plunge base and a nice soft case to carry everything.
My first use was cutting some 3/4" dadoes in a work bench top to install some T-track. I was able to set the depth stop on the plunge base for both passes (one at 1/8" and the other at full depth of the track.) The router handled it all with no problems. The router has "soft start", so there was no jerking when power was applied. When the router came up to speed, I was impressed with how smooth it was. The old Craftsman was fairly smooth - or I should say that I never felt vibration from it unless I was doing a lot of routing. The DW618 is so much smoother, I started looking for stuff to route.
The plunge base has an innovative dust collection connection that goes through the spring side of the base and will connect via 1.5" vacuum connection. It is nice in that it keeps the hose out of the way, but it isn't quite as effective as the port on my Blue Hawk router.
I did consider 2 other routers before I selected the DeWalt. The handles on the DeWalt bases were more comfortable than those on the bases for Bosch 1617EVSPK, and the overall package was a better value to me than the Porter Cable 892 (which only had a fixed base and was at the same price point as the other 2).