For every runner like me who would advocate a different model, there
are probably two or three who'd say get another pair of the same shoe.
You don't say what shoes if any you've tried in the past, or how well you
like the shoes you have, whether you got them from a running store on advice
according to your foot structure and running style, or if you just kind of
chose them at random. If the latter, I'm all for trying new shoes once in a
while. When you find some your feet really like, then get another pair of
those next time, or if you're a higher mileage runner (you're not) stock up
on that model while you can get it.
-Tony
The advantages of having more than one instance of the same model are (1) once
you find out what works, you can stick to it, and (2) if a model you like is
on sale, you grab several of them, not just one.
I don't know of any advantages of having different models unless they serve
substantially different purposes (e.g. one for cross country racing, one for
training runs)
Cheers,
--
Elflord
If you're reasonably easy to fit and don't have complications like
orthotics then I'll vote for getting a different model too (do we now
need four to six to say get more of the same?). I don't have any real
foundation for that opinion, I just don't like the idea of continually
pounding away in the exact same shoe.
Charlie: Why do you advocate a different model?
brianj
I'll add though that at 15 miles/week it's probably not going to make
a difference either way.
Largely the same reason I think tf gave above: mainstream running
shoes all influence the gait, and my intuition says maybe it's best to
slightly distribute these coercive forces using different models than
to always have the same "correction" applied to one's gait. Just a
hunch; no studies to quote or anything.
The other concrete thing that comes to mind: it encourages
experimentation. If it weren't for trial and error I'd still be in
mainstream stability shoes and, I suspect, spent more time injured as
a consequence. I kept finding that (starting with removing the
horrible Superfeet inserts I'd paid extra for, when I "got smart" and
bought my second pair of shoes from a real running store) the less
stability, the lighter, the more flexible and low-heeled (1), the
better. If one only runs in one model at any given time, it's
probably not a good idea to make big changes from one pair to the
next; so you might never learn there's something else out there which
suits you better.
One argument against which has been cited here before: if one model in
your rotation does *not* suit you, it might remain a mystery whereas
it'd be real obvious if that's what you were running in day in day
out. Maybe it gradually leads to injury as you wear it a couple times
a week but don't realize this shoe is to blame.
(1) within limits: I do need some forefoot cushion if I'm gonna be
running more than a few miles on pavement, else my right foot gets
calloused
I run in at least four rotated pair, different ages, different brands,
same style (nuetral cushioned). I've been told (by many posters here
and others, that is good for you, strengthens the muscles in your feet
and keeps you from getting too much "memory". I can't say if that is
true, but it hasn't hurt.
Frank
And I like to pound on the same shoe! Adding a different shoe
potentially complicates the issue. Why worry about two pairs that can
change models and then have to find a replacement. The changeability of
one pair alone can be a pain in the ass.
I was going to do analogy with a wife but it didn't come out right quite
believable. ;)
There is no rule of thumb but rule of fingers, many of them.
-Doug
Do you apply the same rationale to spouses? :) :)
-D
With 15 mpw, it's not a big deal. If you have hard to fit feet and
biomechanics, don't worry about another model, but stock up on model
that works while it's still available. If it's already discontinued,
start looking for a replacement model before you absolutely need it.
If you run on trails at one location and roads at other, you might
consider different models, but not necessary.
Both shoe models that I run in are discontinued, but I have one model
for summer that drains well and another model for winter that's a little
bit warmer and has a tread pattern where I can put screws. Using those
for winter when it's not too big a deal which I wear under neoprene
overbooties on snowshoes, allows me to save my drainable shoes for
summer conditions. (Actually, my winter model does have an updated
version, but the toebox is too small for summer, but it works fine on
roads this time of year.)
Dot
--
"Magic rocks and roots - the ones that trip you but you can never find
afterwards" - Matt Carpenter