You said you don't like tactical, does that also rule out bullpups? Airguns need longer barrels to get velocity out of limited pressure. But my P35s get decent velocity with a 18 inch barrel out of a less than 30 inch gun. They are not "high end" but are solidly built. I think they need at least trigger adjustment and probably crown polishing out of the box. Some report apparent barrel problems buy my 2 are accurate, the 22 surprisingly so. But with a 18 inch barrel I doubt my 25 can be tuned much over 50 fpe. It likes H&N Slug HPs, however.
You might want to look at the Huben K1. Higher power and a semi automatic.
I also like the looks of the RTI Prophet. A little lighter than many higher end guns but seems to be just as accurate. It can also be switched to different calibers.
The FX dreamline classic is a very traditional looking gun. It's on the lighter end, you can switch barrels, and FXs are know for accuracy. They sell separate slug barrels but sometimes the stock barrel seems to do OK with slugs.
