I had a Netgear Rangemax WNR 3500 (actually still have it, best router I ever used) - no loss of signal and excellent coverage. Had to switch to a different modem/router combo because I changed ISPs and have to use their equipment (it works), I tried a Linksys and a Belkin and neither worked well. Be aware that you will need to configure the router manually; the setup software included with most routers is Windows only.
Another thought: Airport (Express or Extreme) is an Apple product and I've not heard too many negative things about it - you might want to check that out.
I use Apple Airport Extremes (2 of them actually). I attach iPad, iPod Touch (2), Macbook Air, Macbook, Macbook Pro, Mac mini, Macbook Pro. In the past, I've also had Powerbooks, and iBooks.
In the past I've connected an HP LaserJet 1200, an HP LaserJet 1300 to the Airport Extreme via the USB port and allowed the Airport Extreme to be the print server.
Currently I have an HP LaserJet 1536dnf MFP ethernet attached printer (laser printer, scanner, FAX), all of which is supported from all of the above Macbooks.
I have 2 Airport Extremes because my house is long and I cannot cover the entire house with a single router, so I connect the 2nd Airport Extreme via ethernet and configure the 2nd in "Bridge" mode so it is just a WiFi adaptor and disables routing.
If you are having connection issues, you might want to consider if you are having interference problems. Sources of interferences:
- Neighbor's WiFi devices - try running "WiFi Scanner" or "iStumbler" to see what channels your neighbors are using, and see about changing your current router's channel to something 5 channels away if possible (for 802.11g 2.4GHz channels).
- Cordless phones operating on the 2.4GHz which will interfere with your 802.11g 2.4GHz WIFi, or 5GHz cordless phones that will interfere with your 5GHz 802.11n WiFi. This could be your own cordless phones, or your neighbor's (assuming your neighbors are nearby).
- Baby monitors (2.4GHz or 5GHz), which can be your's or your neighbors.
- Microwave ovens (happen to interfere with 2.4GHz WiFi).
- The walls of your home between your WiFi base station and where you use your equipment.