Best all around tire for my GV 250

[Rudolf]

I've rode that day 110 km from my hometown, to a mountain resort (55 km from my hometown to the resort and 55 km return) Wanted to test the effectiveness of the snow tires. On the snow they did great, but on the icy sectors started to slip. We had an unusually mild winter, just a few centimeters of snow only in December. The rest of the winter was like late autumn-early spring like weather. I say properly insulated clothing is the key.

[mrbios]

We bought Avon Viper Stryke tires from the local Honda dealer, mainly because we had not tried that brand yet and we got a good price.
The installation cost was 1 hr of labor, which seemed more than reasonable....
Scoot safely,

One hour is a great deal.  My dealer charged my 3/4 of an hour + valve stems & weights = $95 and I brought the tires and wheels in and reinstalled the wheels when I got home! Regarding the puller I found this picture and a nice explanation of the install process. 

http://redstreak150cc.blogspot.com/2010/11/new-tires-at-5285-work-in-progress.html

[Rudolf]

A proper clothing is the key to riding in cold weather, also the gloves and helmet are important. We had an unusually mild winter... Seemed like late autumn-early spring...

[Rudolf]

I've bought KENDA summer tires.

[MaryK]

Those Kenda tires look good.
But why the different tread patterns ?

[Rudolf]

I don't know, maybe because the different versions of manufacture. One is made in 2012 and the other in 2013. Or maybe the front wheel needs more grip. They cost me equivalent of 38$ a piece.

[mrbios]

I've bought KENDA summer tires.

Rudolf, Nice photos!  FWIW (for what it's worth)... I have never had a problem on any motorcycle that I owned if the brand / tread didn't match.  Obviously, for a sport bike that you plan to ride to the limit matching tires is important but for 98% of street riding and on most scooters with limited ground clearance like the GV250 a complete non issue.