Hiking boots and Tatras

[JIMBO]

Hey, just over a week before I go and I need to get some footwear for hiking. I don't have much of a clue on the subject so am looking for some help.

The most rugged terrain I'll be dealing with will probably be the tatras though I'll be mainly sticking to the main trails and walking paths. So, I'm basically wondering will I need big heavy boots like these- http://www.millets.co.uk/Millets.storefron...oduct/088413341
or would hiking trainer things like these be sufficient e.g. http://www.millets.co.uk/Millets.storefron...oduct/081299621

I'd prefer to buy the trainer type as they're cheaper, lighter and I suppose a bit trendier but will buy the boot type if really needed.

Also, as for hiking through the tatras at this time of year what type of equipment and clothing will be needed. Should I bring waterproofs and some warm clothing or is the weather fine? I don't plan on doing a lot of hiking throughout my whole journey therefore I was intending on only packing light summer clothing.

Thanks