Benefit you more...explain. What are your goals and where do you stand right now?

Whatever makes you ride more to make fitness gains.

My trainer and power meter are all i need, but some people lose their minds and need to get outside so mountain bike in winter is better for them.

Computrainer. You never have an excuse to not ride the bike, ever.

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Dave Campbell | Facebook | @DaveECampbell | h2ofun@h2ofun.net

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Lions don't lose sleep worrying about the sheep

I'm going with MTB, cos having options when it comes to your training will likely help keep you motivated.... Mashing away on the road or TT rig for the most part is cool, but when you do get over it, going out on the mtb can restore the fun of it all....
Get a hard tail 29er and u can do CX racing too ...

Of course the correct answer is all of them, but I'm sure u know that already...

+1 on this. The MTB will provide great workouts and improve your bike handling skills tremendously, which, assuming you are a triathlete, suck.

It REALLY depends on where you live.
If there are good roads to ride on, get a road bike.
If there aren't roads, but there is a good trail system, get the mtb.
If you can't ride outside where you live, or if you only ever want to ride in the middle of the night, sure, computrainer.
I'd always take riding outside over riding inside when it's possible. But it's not always possible.

I would say either Computrainer (love mine) or MTB.

How "weak" are you on the bike? What is the road scene like in your local area? Is there weekly road rides you could attend if you had a road bike? Are you interested in doing road races at all?

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-Brad Williams
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x2

Assume all time and distance equal. Assuming you use them each to their fullest.

a mountain bike will give you the most fun

a road bike will make you a better all around cyclist

a computrainer will make you stronger and faster

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Austin Hardy -

Computrainer without question. It actually has a guarantee of sorts that it will make you faster, and I believe that is quite true. You'll wonder why you waited to get one. As far as the mountain bike, yes it will give you better skills, but every one of my friends and myself have all had injuries from mountain biking, as there's always a tree that will get in your way. Broken fingers, collar bones, etc are quite common as you get more brave. Stay with the Computrainer....

This x2

Which did you select?

I agree with this response, you will enjoy and get benefit from all of them, but I would start with the computrainer if you had to choose.

Btw, check out DC Rainmakers review on indoor bike trainers ( and other tri gear) If I remember, he gave some very positive reviews to some other trainers on the market.

My goal is getting better in bike split..My first Ironman was at Texas- My bike spilt is 5:30, My Second IM was at Arizona, my bike split is 5:32.
My 70.3 bike spilt is from 2:26-2:36.

I'm from Texas.

X3. CompuTrainer can do it all. We hammered a Sufferfest HIIT session last night, will race the Ironman Boulder course on Sunday, did our recurring FTP test last week, etc, etc., etc. Add in a cheap projector (such as a NEC VT670 from eBay for <$90) and you'll have a setup to drool for. And you'll ride it a lot!

probably none of the above, unless getting a road bike would encourage you to train more.

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