Viking65 wrote:
I'm thinking of a trip to Jaco the first week in June, but I'm also considering other alternatives, such as Colombia, Germany, or Prague. Anyone done any mongering in one of those places who could help me make a comparison? I'm looking to get the best "bang for my buck", so to speak

I've been to SJ a couple of times, and my last visit was not nearly as enjoyable as the first. I've heard HDR has really gone downhill. Also, if I visit Jaco, and there are no rooms at Cocal, could someone suggest a couple of chica-friendly hotels for me? Thanks.
Check Canciones del Mar - also, I was told the Delrey opened a property there - lots of chica friendly places, but be careful of a fee. That time of year you should be fine - its rainy season.
HDR going down hill is as common a debate as you will find on this board - my comment is if the HDR and KL are your primary "go to" places, you need to get out more - there are tons of Massage Parlors, bars, clubs, et al that you can meet company - and bring them back to your room.
What you need is a knowledgable wingman, frankly.
I was in Jaco in Feb, and the other places you mentioned appeal to me more - but that's not to say you should not visit Jaco.
Jaco gets many amature mongers, as well as guys from Los Sueneos who can afford to pay - driving up the prices - check out the Beetle Bar after midnight, after the Cocal closes.
The "scene" in Jaco is very Delreyish - many girls, all wanting $100 or more; it reminded me of the Delrey 10 years ago - it reminds me of the HDR - for me, Jaco is OK as a place, but if you want to monger, go to San Jose.