I’m 5ft 9 and feel the size works well for me as a ML
Thinking of getting this. I'm 5'9 do you think the m/l will fit? I know it says j should get m, but j hate feeling too small on bikes. Also..would you guys go for the fast road slr1 2017 for 700 instead? I don't know much about bikes so any advice appreciated.
Errr. Have you ever ridden them yourself? I only ask the question as someone who had wouldn't have written as you had... Anyway, to cover your points: 1. Proper cycling shoes are about 10x more comfy than trainers when on the bike. After all, people wear them for many hours a day when doing long rides. They also hold your foot in the perfect position on the pedal, something that even experienced riders find hard to do when riding for extended periods and, again, this reduces fatigue. Good cycling shoes are also well ventilated (for summer use) or waterproof (for winter use) and, again, superior to casual shoes in nearly every way. 2. If you're talking about road cleats, then yes, they are not designed to walk around in, but most SPDs (FYI, SPDs describe a specific type of Shimano clipless pedal and use a recessed cleat on the sole of the shoe) are perfectly usable and some are specifically designed for you to get off and walk or run. 3. The accident thing is, frankly, a pile of rubbish. I've not heard of a single statistic that picks up on clipless pedals as being in any way more dangerous than other pedals. In fact, compared to their predecessor - the clip and strap - they are hugely more safe as you can extract your feet from them without needing to unbuckle with your hands. Personally, I've been using them for 25 years and am yet to have an accident directly attributable to them. I question your use of "often" here -  4. A good cyclist wouldn't even put their feet down at the lights. You *can* trackstand, can't you? Either way, a competent cyclist can be up and running just as quickly in clipless pedals as with flat pedals, and far more quickly than with clips and straps. 5. Good, flat pedals are indeed very grippy, although I would never really recommend them for road use unless only very casual riding due to the above reasons. 6. Look good? WAT. They are pedals. They serve a purpose.
Giant doesn't publish bike weights, as it's apparently too complicated given sizes etc. Yeah, must be very hard to weight each size of each bike. From what I have read, the weight is the about same between a Trek FX 3 and a Giant Fastroad 2. I guess the Giant's carbon frame is lighter, but then such weight is lost on the heavier disc brakes. Not sure what's the point then to pay a premium price for a lightweight frame, but then add back the weight elsewhere. I personally don't think disc brakes are essential and they have drawbacks too, hence my choice of a Trek FX without disc brakes, which is perfectly fine. The Giant is a good deal if you compare to the original retail price. If you want a good and light hybrid bike, the Trek is a better deal at £200 cheaper than discounted price of Giant, for a bike of the same weight and similar performance.
In your first post you said you're not sure why it's a good deal compared to your Trek. I clarified for you - the Giant has a full carbon composite frame and it has a hydraulic disc brake setup. If you really wanted to compare the rest of the components we could find out what year your model is and go through them one by one (but please, let's not). Now, you can always argue whether carbon frames and disc brakes etc are worth the extra cost and to what kind of rider, but basically this what makes the Giant more expensive. If you don't need or want that for your purposes, it doesn't make the Giant any less of a good deal. I still don't know what your source is for the weight of either of the models you're comparing and without that it's pretty pointless speculating about the Giant being 'heavy' - I am very doubtful about that. But regardless, carbon bikes will almost always be lighter like for like, yet one of the things a light frame allows you to do is run heavier duty parts which offer different performance (bigger tyres, disc brakes, suspension forks etc) with less of a weight penalty to the bike overall, so there is still a benefit to carbon.