Velvia

Same here, my children no longer call me a brick dad who carry a stone for family holiday.

thanks.

Thanks so much.

You really help me nail it as i only prefer to use it during the day time.

Thanks.

I have both lenses. Localy I shoot with 55-200 cause it better handles low light. However for travel I'll take 50-230 as it very light, very cheap, has longer reach and it's IQ is on par with 55-200 during daytime.

the advantages are minimal at best. If it were a 2.8 lens yes, but at 3.5-4.8... no

I've never used the XC series, but I can definitely attest to the GREATNESS of the 55-200 lens.  It's my go-to for long(er) shots.  I prefer the 55-200 over the 50-140 due to it's size, weight, and a somewhat longer reach.
 
If you can afford it, go for the 55-200

XC is sharp but dim, light and plastic.
 
XF is more versatile photographically but heavier. Well built. One of my favorite lens. At long end, very decent bokeh under the right conditions.

this is the 50-230 at f6.7 and 230mm
 

 
 
This is the same lens at f11
 

 
55-200 at f 4.8 and 200mm
 

 
 
Same lens at f11