ACL,
Some stuff is actually better in the 737 - like the displays and the dual GPS LNAV capability. Not to mention that the left seater can easily, and I do mean easily, hand-fly a single engine CAT III approach with the HUD, albeit down to a 50 DH vice an AH.
The problem with the VNAV in the 737 is that it is weighted far too heavily toward fuel savings (idle descents) to the point where it will often hold you up at altitude far too long and then immediately after starting down it will start wanking at you for drag - which is a drag (pun intended ). I mean, really, if you are going to start asking for drag .00005 seconds after starting down why not just start down a little earlier. Starting down 15 miles prior to TD (via descend now) may help but it will eventually rejoin the "unrealistic" descent path and then start asking for drag again.
There are many techniques to get around this (increase tailwinds, Engine A/I on, etc) but these merely defeats the purpose of VNAV in the first place which is fuel savings. The VNAV is quirky but you will eventually achieve "Total VNAV conciousness" so you will have that going for you.
Trust me - after a few flights you will be much more bummed out about the inadequate cockpit confines then VNAV shortcomings.
Scoop