I have them both. The 2D panel on the 441 is one of the best I have seen and makes for a great IFR/approach practice platform. Everything else about the aircraft is also great. The 421 is well done, but in my opinion it is not nearly as good as the 441.For a piston twin in the 421 size range I much prefer the FSD Navajo.

As the voice of dissent here, I have to say that after flying the Aeroworx B200, I purchased the 421 and was disappointed. My computer is a 1.6 Gig P4 with a GeForce 2Ti video board...all due to be upgraded this summer...which is significantly lower than the minimum recommended by Aeroworx. Their bird flies just fine, except for the wait time when I call up a subpanel...but the bird is WORTH IT.The F1 421C is, by contrast, not as nice a 2D panel, and offers me lower frame rates and more stuttering. Worse, the DXT3 textures are nowhere near as clear as those on the B200...I can't speak for the 441, and I am otherwise a loyal F1 customer, but I've climbed into the Beech's cockpit and that's where I plan to stay.Yoda

>The F1 421C is, by contrast, not as nice a 2D panel, and>offers me lower frame rates and more stuttering. Worse, the>DXT3 textures are nowhere near as clear as those on the>B200...Try not to forget that the 421 was developed over 2 years ago and even that being so, there is a lot of people that still really enjoy the old girl.The 441 is essentially the next level.Regards,Jim Rhoads

I am a long-time owner of the 421 and have always liked it. I just purchased the 441 tonight and it is a great plane as well. A very fast turboprop. This plane thinks it is actually a business jet! I only had a short time in it, but I think it is going to keep me busy for a long time. A lot of newer models can cause some performance problems, but the performance of the 441 was excellent. I love the panel on the 441 as well. It has a window where you can select the various panel parts and it can be turned on and off. I always like this approach. I would say go with the 441, but obviously I haven't spent a lot of time with it. I also own most other twin prop planes, and I still fly them all, including the 421.