10 speed vs 11 speed- What would you do

I'm finishing my new bike build, were I went 11-spd.   I was hanging out on the other site classifieds and found a brand new FLO hub+11 spd freewheel for $85 and am having my wheel changed out.  I didn't have the option of a 11spd free-wheel change so had to get a new hub.  No headaches other than spending a few more bucks!

If your hub is 11-spd freewheel compatible then its a swap and redish.

per darkspeedworks, it does if you remove one of the cogs and setup the RD high & low limiters as a quasi 10 speed!  That way you can change out the rear wheel whenever your ready. 

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You can see Shimano's progression from 7 and 8 speed all the way up to 11 speed across all their groupsets here

http://en.wikipedia.org/wiki/Shimano

If history is any indicator, we can probably expect Shimano 105 11 speed in a year or two.  Once that happens, pretty much every brand new race worthy bike on the market will be decked out with 11 speed by 2016.  Assuming SRAM will adopt a similar progression (they have so far) to stay on a level playing field marketing wise.  So the change is coming eventually.  There really isn't any "need" to change to 11 speed if you don't want to...but the market will change to 11 speed regardless of if you need it or not.

So if you aren't fully invested in 10 speed at the moment, I would strongly consider moving to 11 speed now.  I don't plan to make the jump for another couple of years...simply because I already have a lot of 10 speed stuff and I don't plan to buy another road/tri bike for a couple of years.

I picked up a '12 model year version of a bike a few months ago w/ Ultegra 10-speed, and could have grabbed a '13 with 11-speed if I wanted.  I liked the paint scheme on the '12 much better, and 1 extra gear didn't really matter to me that much.  My old frame was shot so I couldn't really wait around to see what the '14 series with 11-speed would look like.

I'm happy with the 10-speed Ultegra.  I'm sure I would have been happy with 11-speed, too.  I was happy with my 9-speed DA that it replaced.  I think the 9-speed DA had a  slightly higher shifting/tunability quality than the Ultegra 10-speed does.  So as someone else pointed out, if I were in your shoes I'd contemplate the 105 vs. Ultegra question more than the 10 vs 11 speed question.  If you can afford the Ultegra, it's probably worth the extra $ over the 105.  I could have afforded DA on the new bike, but the price differential from the Ultegra to DA was just way too high to justify any quality difference in my mind.  I don't recall the price differential being so high between those two when I purchased the DA a decade ago.

In my case I had to get a new hub to replace my existing, I found a new FLO Cycling hub on the other site and bought the 11-spd freehub for it from FLO.  The LBS was able to use my existing spokes and redished it, so I avoided the $ for new spokes. This route was 1/3rd the cost of a new FLO 90, that'll have to wait!

If I could have gone the freehub replacement route then only a redish would have been needed with it.

If your wheel/hub is already 11-spd compatible nothing changes.

We run Bontrager Aeolus 5's and 7's quite a bit as they are team wheels.  The shop switches them back and forth from 10 to 11 speed freehub easily.  I haven't paid much attention to it so I don't know what the parts cost.  I know we got our Cycleops PT wheel switched from 10 to 11 speed freehub for 60 bucks. 

10 speed wtih be as obsolete as 9 speed is now in a few years.  I'd go with the 11 speed Ultegra for a few more bucks.