head unit question.

[///digitalme]

so a few days ago someone broke into my garage and tried to steal my stereo and in the process broke my dual head unit....
so now im left with no music in my car...

my question is how do i know if the unit fits in the e30??
im trying to keep cost low and just get a cheap unit since i only use the aux cable and usb...im not looking for a cd unit...unless cheap less than 80 bucks

so far im liking these...
how can i know this one fits?

http://www.amazon.com/612UA-MP3-Compatible-Digital-Media-Receiver/dp/B004S50WPG/ref=pd_sim_sbs_e_2

http://www.amazon.com/XO-Vision-XD103-Stereo-Receiver/dp/B0071LSAR6/ref=au_pf_pfg_s?ie=UTF8&Make=BMW%7C31&Model=318is%7C163&Year=1991%7C1991&carId=001&n=1077068&newCar=1&s=car&vehicleType=automotive

http://www.amazon.com/Pyle-PLR34M-In-Dash-Receiver-Playback/dp/B0078XGE3Y/ref=pd_sim_e_20

any suggestions?
or input on these cheap units??

i know cheap is cheap just dont have a lot of extra money to spend on another stereo...

thanks

[Gregs///M]

All head units are in standard sizes. Single Din, Din and a half, and double din. The radios you listed are all Din size. Double din would be double that (think navigation units.)

So yea, any Din radio will work.

[Tismael711]

you're not lying about being cheap! Damn.....spend a hundred!

[Skunkworks]

These are all crap. By a kenwood or JVC

[Cabriolet]

get this:

http://www.amazon.com/Alpine-CDE-121-In-Dash-Receiver-Players/dp/B008DR3YZ0/ref=sr_1_19?ie=UTF8&qid=1366735592&sr=8-19&keywords=alpine+car+stereo

there is a point when you've bought something too cheap at $40 is less than a tank of gas.

[5Toes]

JVC is a great deck for the price. tons of features.