There's a huge installed base of Kossel builders - in fact, I'm aware of 7 (including 2 derivatives) within the local RepRap group. Yes, you'll have more calibration to do, but it's not that hard, and the upside is a extremely fast, lightweight printer. Having built both a Legacy Kossel with strings, like the 3DR, and 2 Kossel Minis with belts, I have to say that belts are the easier option and now price-competitive.
You can add a heated bed to the Kossel, and I'm not sure why more people don't do this.
Trinity Labs has a heated bed for $35: (http://trinitylabs.com/products/12v-120w-kapton-heater-160mm-round)
Ultibots sells one for $25: [www.ultibots.com]
... and there are other choices if you want to go past the standard 170mm bed.
I added the Trinity one to my Kossel last week and it took 30 mins to install, with the only tool being a crimper. If you're seriously considering a delta, I would suggest checking the deltabot list on Google groups, and asking there if you have any more questions.
You can add a heated bed to the Kossel, and I'm not sure why more people don't do this.
Trinity Labs has a heated bed for $35: (http://trinitylabs.com/products/12v-120w-kapton-heater-160mm-round)
Ultibots sells one for $25: [www.ultibots.com]
... and there are other choices if you want to go past the standard 170mm bed.
I added the Trinity one to my Kossel last week and it took 30 mins to install, with the only tool being a crimper. If you're seriously considering a delta, I would suggest checking the deltabot list on Google groups, and asking there if you have any more questions.