We are planning a trip this summer and I'm conflicted between Prague and Salzburg. We plan to see Budapest, Bratislava, Trencin, Vienna, and Salzburg or Prague? Any suggestions?

Suggestions for what? It's a pretty wide-open question as you don't say how much time you're planning to spend or how you'll be traveling. It's already tourist season here in Europe, so you're late in making plans.

I suggest to buy suncream.

I'd pick Prague, but your interests may be different.

Or are you just comparing the logistics of getting to each?

How many days do you have for Salzburg/Prague? If this isn't close to a 3-week trip, I wouldn't do either. But that's me. I don't like fast-moving itineraries.

I'd make sure Vienna, Budapest and Prague had at least 4 nights.

We plan to see Budapest, Bratislava, Trencin, Vienna, and Salzburg or Prague? Any suggestions?>

By rail? which may be best for cities especially - check out the European East Railpass which lets you hop on most trains just by showing up -I'd go first class too- much better especially for folks with luggage. Great sources on rail info: www.ricksteves.com; www.budgeteuropetravel.com and www.seat61.com.

When are visiting? How many days are you traveling? Is this a first time visit? What are your interests? And, why Trencin?

Yes how much time you have is very important to critquing.

When are you going - month?

Take a look at flights...

Budapest - Salzburg likely means you'll fly back from Munich.

Budapest - Prague means you'll fly back from Prague.

Both destinations are wonderful and worthwhile, but depending on airlines and their code-share partners, there could be a cost-differential depending on your final European airport.