Here are two electric options. I have one Milwaukee and 2 of the Harbor Freight versions.
A very brief comparison:
The Milwaukee is several ounces heavier and has the common paddle switch located at the back of the motor housing which makes it rediculously difficult to single-hand for more than a few seconds at a time - and I have an uncommonly strong grip from racing MX motorcycles for nearly 30 years, so I am not a poosay when it comes to grip, especially with my throttle hand. The bar position is retained by just about the cheapest thumbscrew arrangement one could imagine - I would expect to see this cheap **** on the HF model, not the Milwaukee. The pivot and arm support are not all that robust, so the tracking changes when you change from using the top of the arm to the bottom of the arm, and this ***** big time as I use both the top and the bottom of the arm. Belt change requires a screwdriver. It retails for over $235.00.
The HF model is noticably lighter, has equivalent power (the belt will break on either one before it is stalled). The HF model is switched by a rocker switch at the front. This allows you to adjust the balance and position of the tool easily without asking your fingers to contort into unnatural and uncomfortable positions. It can be gripped by the angle gear housing. The wear pads on the belt arm **** - replace them with HDPE as soon as you get one. Belt chages require a screwdriver. Retail on the HF model is $38.00.
Both models take the same belt - 1/2"X18" but I run a 3/4" wide belt. The belts actually last a long time (for use with aluminum anyway). If you buy in bulk, the cost per belt goes down considerably.
Franz - Let me know if you are ever near Virginia Beach - I would like to have you visit my shop and do some manufacturing consulting (for free, right?).
Scott