Then it's likely you're not taking the right approach to using ArchiCAD.
We just implemented 35 seats of ArchiCAD, and evaluated Vectorworks in the process. Vectorworks was not a bad product, but we're doing 100% BIM instead of just 'CAD'. If you want to do things the old way ("drafting"), then Vectorworks is a highly capable program, and we ranked it 4th/5th (tie with our former program: Arris), below Microstation Triforma (3rd) Revit (2nd, but we cringed because it's an AutoDesk product) and ArchiCAD (1st).
You're expressing the 2D vs. 3D thing in exactly the way that people do who don't understand the concept of BIM. You may think you only do 2D... do you ever draw a wall? Unless you live in an alternate universe, that wall is 3D and parametric in real life, and should be represented architecturally as such (it has thickness, length AND height, and has materials, finishes and other attributes). Model it ONCE, and derive your plans, sections, elevations, interior elevations, presentation materials, details and schedules FROM the model. Start the model in the design development phase, and evolve it all the way through to final CDs. Do not unlink your sections and elevations, ever. Use the ArchiCAD 'patch' feature for additional 2D details in detail windows. Model everything down to 1/2" or 3/4" scale.
If you hang out on the ArchiTalk forums, you'll find there are two types of people - modelers and unlinkers. The unlinkers will destroy their model at some point and just draw lines. The modelers are like us - do the absolute bare minimum of 2D linework possible, and model everything. In my firm, destroying a model by unlinking your sections and elevations and ruining the 'fix it once, it updates everywhere' abilities of ArchiCAD is tantamount to destroying company property, and may even lead to you 'pursuing career options elsewhere'.
If you want some ArchiCAD tips, PM me. If you're in the area, you can come visit the office.
If you had upgraded from AC8 to AC9 before the end of Sept. (as we did), it was significantly discounted. I still don't think you can really get a full package of Vectorworks ($995) for the current 8 --> 9 upgrade price.