Jerry,
The ipod shuffle has no screen. If you have a variety of content (I categorize my content as ebooks, music for easy listening, music for working out, .....), the disadvantage is that you cannot navigate. Especially if you use audio workouts like itrain and cardio coach or even if you decide to try free mp3s like the couch to 5k while running, when you put in multiple types of audio on the shuffle, you will have to find what you want by using forward which can be a tad frustrating. Apart from that it is a high quality, ultra reliable, easy to use, sleek player. I used one for many months (1st gen Shuffle) before I decided I needed a screen.
Here are comparable models that are compact and also have a screen:
a. Sansa Clip at $30 from amazon for the 2 gb model and $5 more for 4GB is a way better deal in my opinion. It has a clip for easy wearing, and a screen. Not as small as the Shuffle. I love gifting electronics (so many cool gadgets but I can only use one of a kind myself!) and have gifted Sandisk in the past. Sandisk is a reliable, rugged brand for mp3 players but their players dont look as sleek as the ipod.
http://www.amazon.com/SanDisk-Sansa..._m=ATVPDKIKX0DER&pf_rd_r=1PR73VN9W5WJNCQ0YZ26
b. The Fuze series from Sandisk gives you features comparable to the ipod nano (video + audio) at the price-point of the Shuffle. It has a micro sd card slot for expandable memory which is useful if you dont like planning ahead, because you can put stuff on sd cards and carry them around along with the player. You will need an armband or to slip the player into your pocket while running.
http://www.amazon.com/SanDisk-Sansa..._m=ATVPDKIKX0DER&pf_rd_r=1BTE9A6K76ZN2NQV0P5N
c. Also check out the Creative Zen Stone - Creative's answer to the shuffle. There are many models - with speakers, with clip, with neither, with both. Amazon has good prices and sometimes the Creative site has amazing bargains in the refurbished section.
If you decide on the Shuffle, check the price at Apple's site under the refurbished section, besides other shops.
All competing models to the Shuffle in this list have something the shuffle does not have which is built-in FM which is nice when you want to hear something other than your own collection.