@Yazzoo I don't like what is referred to as a compact (50/34) a compact is defined by its B.C.D. that being normally 110mm a normal double 130mm (there are variations on these measurements), its the same with triples I ride a compact triple 74mm inner ring with the middle and the outer being 110mm, my other triple crankset is 130mm outer but a really odd inner (its a prowheel) and I couldn't find rings in its size.
Many people go for compacts on the advise of others, then are looking for low gearing
Take this example this is a 50/34 on an 11sp 12-25
My average gear inch is about the 61" mark which on a compact puts me towards the extremes of each front ring.
now take my triple set up
That 61" is now pretty central on the middle ring, much less lateral wear on the chain, its possibly why I get over 3,000 miles a chain.
To get a compact as low as mine you have to fit a 28th rear, on an 11sp its not so bad as you would lose the 18th, but I find that 17-19 jump quite a large one, however on any thing less you start losing things like the 16th and most cassettes with a large rear cog usually start at 11th, which on a 50x11 is 120" only ever used down hill, so to my mind a waste, unless your extremely fit.
I can change my setup to a 26/38/50 and a 12-27 to give
Almost as low as the 28x32 setup on the O.P. setup, however I don't much like the drop from the 38 to 26 as I have to go quite a way back down the cassette (or up) to be in the same range, a bit like a 50/34 compact setup.
This is another option, giving a greater range with a slightly lower gear than my current set up, and pretty much the same central 60" gearing.
The options are almost endless, but we are being forced into certain choices by the choice of a 50/34 over a triple.
Any setup on a 110mm bcd crankset is a compact by the way even a 52/39 variations 52/36 50/38 48/36 ect.... a normal double of 130mm can not take a chain ring of less than 38th due to the dimensions, and a 110mm bcd can not take less than 34th (though I did read of a 33th).
Sorry to have digressed from the main post, but hope this helps.